One of the biggest improvements I've made to my exercising game is grabbing an anatomy book and simply looking at how the muscles are constructed. Many exercising myths, broscience and mistakes can be ironed out by simply looking at the muscles and thinking about what they actually do.
Simplified: most muscles consist of 3 parts. A tendon on each end attaching to the bone and a muscle belly inbetween them. The muscle fleshy muscle belly is the actual thing that contracts, moving those 2 bones closer/farther from each other and it's also the part that you're actually working out and that will grow. Tendons don't grow, they may become stronger but they're not there to grow. The muscle reaches peak contraction and thus gets a full workout when your move the 2 tendons closest to each other as much as you can. If you finish a rep only half way, then the muscle doesn't get fully stimulated and some muscle fibres simply don't get activated. No activation = no stimulation = no (fully optimal) muscle growth.
What does that have to do with angles and working out? You gotta grasp the fact that the function of any given muscle is simply to bring the 2 tendons on each end closer to each other. That usually occurs in a straight line, usually working against gravity. So to optimally stimulate any given muscle, you need to find that certain angle where the muscle will move a bone in a STRAIGHT line towards its other tendon. Muscles aren't magical or sophisticated devices, to move a bone in a "weird" non linear direction many other muscles need to work in tandem to achieve that goal. So if you can eliminate those other supporting muscles from any given movement, you can perfectly isolate the muscle that you really want to work out in full.
Example A: latissimus
![[Image: AaZU9xk.jpg]](http://i.imgur.com/AaZU9xk.jpg)
As you can see, woe is me I'm actually sorta contradicting myself, it's attached just at the beginning of the upper arm bone in the shoulder and then diagonally all along the spine. When your bring those 2 end together, it'll simply bring the upper arm bone from above your head in a half circle motion to the side of your body. Latissimus also doesn't give a fuck what you're doing with your lower arm while you do that motion. And yet you'll see people perform a lat pull like this:
![[Image: pfFQjbB.jpg]](http://i.imgur.com/pfFQjbB.jpg)
So what's wrong here? Well he leaned back HEAVILY and changed the angle. Gravity of the cable is pulling his arms upward in a straight line so he should stay as straight upward while pulling his elbow to the side of his body, yet the biggest workout he'll be giving while pulling like this is to his biceps and rhomboids/traps (they pull the shoulder blades together). If he leaned backward a bit more he'd be doing a perfect row. Good exercise, but mostly for the rhombs/traps.
![[Image: f0MKKPo.jpg]](http://i.imgur.com/f0MKKPo.jpg)
Another wrong pull. Better than the previous one? Sure. Pulling with the lats? Yeah, a bit. You don't see it, because because he hyperextends he lower back so much she's basically in the same position as the guy above. Also, elbows flared. What's the function of the lats? Bringing the elbows closer to the body.
![[Image: x6dVyDq.jpg]](http://i.imgur.com/x6dVyDq.jpg)
I was doing the exercise like this, from the floor. Perfect diagonal angle, keep straight, and if you don't lean back there's basically no other muscle that can help you out to complete the movement. Bad angle for the biceps, hard to lean back, only the lats are able to work.
Why do I mention the lats? I'm no saint, I was doing the lat pull wrong a long time. It LOOKED right, but the lats weren't growing. Looked at the anatomy book, changed and perfected the angle, lats started getting sore because they were actually working.
Example B: side deltoid
![[Image: ruIoWv5.jpg]](http://i.imgur.com/ruIoWv5.jpg)
Notice the attachments of the tendons: shoulder blade and upper arm bone. The shoulder blade is on your BACK, not your front. So why are people performing the side lateral raise like this, in front of them?
![[Image: oGJZli8.jpg]](http://i.imgur.com/oGJZli8.jpg)
Mostly a combination of bad angles + oftentimes to heavy weight so they swing it up with momentum + people have the tendency to lead with the thing which holds the weight, in this case the hands. But the side delt isn't attached in any way to the lower arm so it couldn't give a fuck where your hands end up being, they're basically there just along for the ride but aren't the actual target bone to be moved. To really get the side delt, I'd recommend doing it 1 arm at a time. Retract your shoulder blade, now you arm will be at your side and even ever so slightly behind you. Now focus on raising up YOUR ELBOW to the side and a bit behind you, hand comes along for the ride obviously. THIS is how you get the side delt. Front delts are obviously much stronger that your side delts and will always have the urge to help out, you need to eliminate them as much as you can from that movement, and you do that by getting the proper angle which is a bit behind you, so your front delts can't work much. Oh sure, the weight will have to get smaller, but now you're actually using that weight for the proper muscle.
Example C: abs in general
![[Image: maxresdefault.jpg]](https://i.ytimg.com/vi/mxOajxO8mX0/maxresdefault.jpg)
Again, notice the attachments: pelvic bone and ribcage. But a finger on the lowest part of your ribcage and your pelvis. Now bring those as close together as you can. How do you end up looking? Probably something like this:
![[Image: 9018WIc.jpg]](http://i.imgur.com/9018WIc.jpg)
(no homo) (srs) Point is, you're curled up. Your lower back is rounded. That's the peak contraction for your abs. Point being, your need to curl up and get all rounded to optimally contract the abs. How do you see most people working out the abs?
![[Image: F2XwaHx.jpg]](http://i.imgur.com/F2XwaHx.jpg)
Dafuq is this shit? Why are they so straight? Oh sure the abs will burn doing that too, but that's understandable that the abs are contracted a bit. If they weren't the torso would just fold backwards. But they're just elevating their ribcage, not really bringing it closer to the pelvic. And the muscle that's mostly working is the hip flexor, which for most people who're sitting down a lot is already overly tight and overdeveloped.
Example D: pecs
![[Image: XnNe21a.jpg]](http://i.imgur.com/XnNe21a.jpg)
Attachment points: middle of the ribcage and the upper arm bone, going through and under the shoulder muscles. Function: bringing the upper arm bone horizontally across your chest. Peak contraction is basically if you try to touch your left shoulder with your right ELBOW. But then again you gotta ask yourself the question: if the pecs only care about the movement of the upper arm and don't give a fuck about the lower arm, why are people doing this?
http://i.imgur.com/6m30XdS.jpg
Upper arms open wide, nice, good full stretch for the pecs, what's with the lower arms being so far apart and putting and extremely dangerous and heavy lever on the shoulder though?
http://i.imgur.com/1bzewHB.png
Or this. Extremely flared lower arms (usually what you'll also see at the gym is them being behind the torso) and then almost performing some hybrid triceps extension by PUSHING out the handles in front of them and ending up at this half-finished movement. Might as well just grab one handle, do it 1 arm at a time and bring the whole upper arm bone fully across your chest.
"B-b-but Rangarr, it's always said that compound movements are king! Why focus and isolate one muscle when I can do several!". Because there already are plenty of normal compound exercises, and they're compound exercises by virtue of being complex movements that could ONLY be performed when severals joints and muscles work together. There's no need to turn a row into a lower back+biceps exercise and there's no need to schedule your next surgeon appointment while doing behind the neck overhead presses and doing some leg drive for good measure. Funny anecdote from myself: in the past I failed to train my back properly. I did rows alright, but start with a weight that was simply too heavy for my rhombs and traps. What does the body automatically do as a defense mechanism when the primary muscles can't pull the weight? It compensates. And so I performed the rows with mainly my biceps. It went well for a while and then all progress completely halted forever. The biceps simply don't have such a big potential for growth in sheer muscle strength as your back. After I checked the anatomy book, I dropped my weight to just the bar. Pussy weights, really. Relaxed my lower arms to disengage the biceps as my as I could. The bar was being barely held by my purposefully limp wrists. And then I simply contracted the shoulder blades together to pull. And the weight progressed steadily, and thus my back has grown.
I could keep going on, but you get the gist. Know where the muscles attach, they you will know their true function, then you will know how to consciouscly contract them in and optimal way and that will lead to proper exercising and stronger/bigger muscles. And this time, the ones that you actually want to target
Simplified: most muscles consist of 3 parts. A tendon on each end attaching to the bone and a muscle belly inbetween them. The muscle fleshy muscle belly is the actual thing that contracts, moving those 2 bones closer/farther from each other and it's also the part that you're actually working out and that will grow. Tendons don't grow, they may become stronger but they're not there to grow. The muscle reaches peak contraction and thus gets a full workout when your move the 2 tendons closest to each other as much as you can. If you finish a rep only half way, then the muscle doesn't get fully stimulated and some muscle fibres simply don't get activated. No activation = no stimulation = no (fully optimal) muscle growth.
What does that have to do with angles and working out? You gotta grasp the fact that the function of any given muscle is simply to bring the 2 tendons on each end closer to each other. That usually occurs in a straight line, usually working against gravity. So to optimally stimulate any given muscle, you need to find that certain angle where the muscle will move a bone in a STRAIGHT line towards its other tendon. Muscles aren't magical or sophisticated devices, to move a bone in a "weird" non linear direction many other muscles need to work in tandem to achieve that goal. So if you can eliminate those other supporting muscles from any given movement, you can perfectly isolate the muscle that you really want to work out in full.
Example A: latissimus
![[Image: AaZU9xk.jpg]](http://i.imgur.com/AaZU9xk.jpg)
As you can see, woe is me I'm actually sorta contradicting myself, it's attached just at the beginning of the upper arm bone in the shoulder and then diagonally all along the spine. When your bring those 2 end together, it'll simply bring the upper arm bone from above your head in a half circle motion to the side of your body. Latissimus also doesn't give a fuck what you're doing with your lower arm while you do that motion. And yet you'll see people perform a lat pull like this:
![[Image: pfFQjbB.jpg]](http://i.imgur.com/pfFQjbB.jpg)
So what's wrong here? Well he leaned back HEAVILY and changed the angle. Gravity of the cable is pulling his arms upward in a straight line so he should stay as straight upward while pulling his elbow to the side of his body, yet the biggest workout he'll be giving while pulling like this is to his biceps and rhomboids/traps (they pull the shoulder blades together). If he leaned backward a bit more he'd be doing a perfect row. Good exercise, but mostly for the rhombs/traps.
![[Image: f0MKKPo.jpg]](http://i.imgur.com/f0MKKPo.jpg)
Another wrong pull. Better than the previous one? Sure. Pulling with the lats? Yeah, a bit. You don't see it, because because he hyperextends he lower back so much she's basically in the same position as the guy above. Also, elbows flared. What's the function of the lats? Bringing the elbows closer to the body.
![[Image: x6dVyDq.jpg]](http://i.imgur.com/x6dVyDq.jpg)
I was doing the exercise like this, from the floor. Perfect diagonal angle, keep straight, and if you don't lean back there's basically no other muscle that can help you out to complete the movement. Bad angle for the biceps, hard to lean back, only the lats are able to work.
Why do I mention the lats? I'm no saint, I was doing the lat pull wrong a long time. It LOOKED right, but the lats weren't growing. Looked at the anatomy book, changed and perfected the angle, lats started getting sore because they were actually working.
Example B: side deltoid
![[Image: ruIoWv5.jpg]](http://i.imgur.com/ruIoWv5.jpg)
Notice the attachments of the tendons: shoulder blade and upper arm bone. The shoulder blade is on your BACK, not your front. So why are people performing the side lateral raise like this, in front of them?
![[Image: oGJZli8.jpg]](http://i.imgur.com/oGJZli8.jpg)
Mostly a combination of bad angles + oftentimes to heavy weight so they swing it up with momentum + people have the tendency to lead with the thing which holds the weight, in this case the hands. But the side delt isn't attached in any way to the lower arm so it couldn't give a fuck where your hands end up being, they're basically there just along for the ride but aren't the actual target bone to be moved. To really get the side delt, I'd recommend doing it 1 arm at a time. Retract your shoulder blade, now you arm will be at your side and even ever so slightly behind you. Now focus on raising up YOUR ELBOW to the side and a bit behind you, hand comes along for the ride obviously. THIS is how you get the side delt. Front delts are obviously much stronger that your side delts and will always have the urge to help out, you need to eliminate them as much as you can from that movement, and you do that by getting the proper angle which is a bit behind you, so your front delts can't work much. Oh sure, the weight will have to get smaller, but now you're actually using that weight for the proper muscle.
Example C: abs in general
![[Image: maxresdefault.jpg]](https://i.ytimg.com/vi/mxOajxO8mX0/maxresdefault.jpg)
Again, notice the attachments: pelvic bone and ribcage. But a finger on the lowest part of your ribcage and your pelvis. Now bring those as close together as you can. How do you end up looking? Probably something like this:
![[Image: 9018WIc.jpg]](http://i.imgur.com/9018WIc.jpg)
(no homo) (srs) Point is, you're curled up. Your lower back is rounded. That's the peak contraction for your abs. Point being, your need to curl up and get all rounded to optimally contract the abs. How do you see most people working out the abs?
![[Image: F2XwaHx.jpg]](http://i.imgur.com/F2XwaHx.jpg)
Dafuq is this shit? Why are they so straight? Oh sure the abs will burn doing that too, but that's understandable that the abs are contracted a bit. If they weren't the torso would just fold backwards. But they're just elevating their ribcage, not really bringing it closer to the pelvic. And the muscle that's mostly working is the hip flexor, which for most people who're sitting down a lot is already overly tight and overdeveloped.
Example D: pecs
![[Image: XnNe21a.jpg]](http://i.imgur.com/XnNe21a.jpg)
Attachment points: middle of the ribcage and the upper arm bone, going through and under the shoulder muscles. Function: bringing the upper arm bone horizontally across your chest. Peak contraction is basically if you try to touch your left shoulder with your right ELBOW. But then again you gotta ask yourself the question: if the pecs only care about the movement of the upper arm and don't give a fuck about the lower arm, why are people doing this?
http://i.imgur.com/6m30XdS.jpg
Upper arms open wide, nice, good full stretch for the pecs, what's with the lower arms being so far apart and putting and extremely dangerous and heavy lever on the shoulder though?
http://i.imgur.com/1bzewHB.png
Or this. Extremely flared lower arms (usually what you'll also see at the gym is them being behind the torso) and then almost performing some hybrid triceps extension by PUSHING out the handles in front of them and ending up at this half-finished movement. Might as well just grab one handle, do it 1 arm at a time and bring the whole upper arm bone fully across your chest.
"B-b-but Rangarr, it's always said that compound movements are king! Why focus and isolate one muscle when I can do several!". Because there already are plenty of normal compound exercises, and they're compound exercises by virtue of being complex movements that could ONLY be performed when severals joints and muscles work together. There's no need to turn a row into a lower back+biceps exercise and there's no need to schedule your next surgeon appointment while doing behind the neck overhead presses and doing some leg drive for good measure. Funny anecdote from myself: in the past I failed to train my back properly. I did rows alright, but start with a weight that was simply too heavy for my rhombs and traps. What does the body automatically do as a defense mechanism when the primary muscles can't pull the weight? It compensates. And so I performed the rows with mainly my biceps. It went well for a while and then all progress completely halted forever. The biceps simply don't have such a big potential for growth in sheer muscle strength as your back. After I checked the anatomy book, I dropped my weight to just the bar. Pussy weights, really. Relaxed my lower arms to disengage the biceps as my as I could. The bar was being barely held by my purposefully limp wrists. And then I simply contracted the shoulder blades together to pull. And the weight progressed steadily, and thus my back has grown.
I could keep going on, but you get the gist. Know where the muscles attach, they you will know their true function, then you will know how to consciouscly contract them in and optimal way and that will lead to proper exercising and stronger/bigger muscles. And this time, the ones that you actually want to target