1. what uses more muscles, smiling or frowning and give # of each.

2. What are the muscles used in sit-ups, push-ups, bicep curls, leg curls and give the prime mover of each one.

so far all i have is that we use 17 muscles to smile and 43 to frown and that sit-ups use abdominal muscles, hip flexors, illias, and psoas muscles ( if that is even correct). I also have so far that the prime mover for push-ups is pectorals.

Every website gives me different answers so any plz help me if you know anything. THANKS

Go here to get most of your answers. http://www.exrx.net/Lists/Directory.html

that website really did not help, i found two muscles that i allready had.

You got it right for everything.

Bicep curls workout your legs.
Leg curls workout your shoulders.

Google is your friend. As an example, I googled "bicep curl muscles" and a bunch of sites popped up. This one has the info you need for the muscles used. http://www.ebicep.com/ So, spend a bit of time on google.