Never dismiss something before you understand it, but in this case I cannot see how, by what physical-biological mechanism external copper would help.
First thing first:
1. Are you properly hydrated? (your urine must be clear at all times, dehydration can makes it's effects felt even days later after it was resolved)
2. Are you eating all the minerals you should?
3. How is your stress? Can you lower it?
4. Do blood work to see if you have any infection.
5. Are you making faulty movements, improper exercise form, sitting, position, shoes that have too much foam/are too soft?
After this, one can try other alternative stuff.
First thing first:
1. Are you properly hydrated? (your urine must be clear at all times, dehydration can makes it's effects felt even days later after it was resolved)
2. Are you eating all the minerals you should?
3. How is your stress? Can you lower it?
4. Do blood work to see if you have any infection.
5. Are you making faulty movements, improper exercise form, sitting, position, shoes that have too much foam/are too soft?
After this, one can try other alternative stuff.