How long for more muscle?

I have a few questions about muscles. Would bike riding and running gain lower leg muscles? And if not, what will ? And how l...

i got this ab workout chair, it looks exactly like this: http://funadvice.com/r/15tbj8roq6f i wasnt sure how to use it, but ...

When do I use hot and cold water to relax my leg muscles after a long run

How long does it take to see improvement in upper body weight lifting?

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

How long do you think it would take to get abs and good arm muscles if I did say 100 situps and pushups a day?

how long do you dink I have to get tone abs like shakira memba I have until march

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

How to keep abs for a long time...?

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