What does it mean to have poor muscle reflexes in an adult?

I don't even know if that's what it's called..I mean like, what can you not do if you tear it? Or do you need to have surgery...

What are some good ways to develop fast twitch muscle fiber? Anyone know?

so badly.. I feel naseas right now cause my tummy muscles feel too sore. does that mean I should skip a few days til it gets ...

The muscles are under the fat and the flab on your stomach so people always say you've got to lose that fat for them to show ...

What exactly does bmi mean? X

I heard that when running, the most used muscle is your abdomnal??? is it true??

If you're sore, does that mean you're burning away fat?

what are the major superficial muscle groups? what do they do? how do they work?

Okay so, I have a good amount of muscle in my arms but its not really THAT noticeable. I have some tattoos and I plan on cove...

Does squeezing your tummy muscles help tone up?