Here's a nice little article that blows your hypothesis out of the water. Hell, read the first line:
WHAT CAUSES MUSCLE SORENESS?
"Your muscles should feel sore on some days after you exercise. If you go out and jog the same two miles at the same pace, day after day, you will never become faster, stronger or have greater endurance. If you stop lifting weights when your muscles start to burn, you won't feel sore on the next day and you will not become stronger. All improvement in any muscle function comes from stressing and recovering. On one day, you go out and exercise hard enough to make your muscles burn during exercise. The burning is a sign that you are damaging your muscles. On the next day, your muscles feel sore because they are damaged and need time to recover. Scientist call this DOMS, delayed onset muscle soreness."
Delayed muscle soreness after exercise: What causes it? - MayoClinic.com
"The exact cause of muscle soreness isn't clear. It may be due to the build up of energy waste products in the muscle. It may also be due to microscopic tears in muscle fibers. If your discomfort is mild, you can continue your exercise program. However, if you have substantial pain with exertion, stop exercising immediately and consult your doctor."
Being TOO sore is never good. But a little soreness after an invigorating workout is certainly not damaging.
By your logic, a muscle can never grow. Which is just plain false.
WHAT CAUSES MUSCLE SORENESS?
"Your muscles should feel sore on some days after you exercise. If you go out and jog the same two miles at the same pace, day after day, you will never become faster, stronger or have greater endurance. If you stop lifting weights when your muscles start to burn, you won't feel sore on the next day and you will not become stronger. All improvement in any muscle function comes from stressing and recovering. On one day, you go out and exercise hard enough to make your muscles burn during exercise. The burning is a sign that you are damaging your muscles. On the next day, your muscles feel sore because they are damaged and need time to recover. Scientist call this DOMS, delayed onset muscle soreness."
Delayed muscle soreness after exercise: What causes it? - MayoClinic.com
"The exact cause of muscle soreness isn't clear. It may be due to the build up of energy waste products in the muscle. It may also be due to microscopic tears in muscle fibers. If your discomfort is mild, you can continue your exercise program. However, if you have substantial pain with exertion, stop exercising immediately and consult your doctor."
Being TOO sore is never good. But a little soreness after an invigorating workout is certainly not damaging.
By your logic, a muscle can never grow. Which is just plain false.