muscles are broken down due to strenuous exercise
Jack fell down and broke his arm.
Muscles store chemical energy from the food your body broke down, then your muscle turn those chemical energy to mechanical energy when they contract.
The Merry-Go-Round Broke Down was created in 1937.
Yellow Back Radio Broke-Down was created in 1969.
The ISBN of "Yellow Back Radio Broke-Down" by Ishmael Reed is 978-0684828789.
Exercise itself is something that breaks down muscles, and the reason you can get muscle growth is that when something gets broke the body likes to try to make the repair stronger than the original.
Yellow Back Radio Broke-Down has 177 pages.
I think it broke down in 341B.C.E.
Broke down
Willie fell down and broke his lips while he was fetching water.
It seems the syntax or grammar system broke down in the sentence.
When exercise is done the muscles are broken down. The muscles are then repared back stronger.