contacting and retracting. actually they are also breaking slightly when you exercise, that way, when they heal the heal bigger and better. (hence, bigger muscles)
by exercising them
When exercising the pH in the muscles becomes more basic. This is because an increase in temperature in the muscles during exercise reduces the attraction pf haemoglobin with oxygen.
By not exercising or eating right.
YES........................
Exercising.
When exercise is done the muscles are broken down. The muscles are then repared back stronger.
No, your muscles will decrease in size when you stop exercising. Google muscle catabolism
By relaxing and not moving them about after you finish exercising.
By relaxing and not moving them about after you finish exercising.
Glucose is the "fuel" for muscles.
Yes it does.
they grow not in the gym exercising but when you take rest during sleep after exercising (working out in the gym)