In order for a muscle to get stronger, it must be:
Astretched longer than is normal.
Bexposed to sustained exercise for a longer than normal period.
Cworked against a load greater than normal.
Dexercised no greater than the threshold of training.
Astretched longer than is normal.
Bexposed to sustained exercise for a longer than normal period.
Cworked against a load greater than normal.
Dexercised no greater than the threshold of training.