The gluteal muscle.
your gluts, abs, and your intogalactibal muscle.
sartorius
ur abs
No, it is not. It is the large chest muscle.
Because you sit on it everyday!
Rectus abdominus Internal and external obliques Transversus abdominus.
the abdominal muscles
Technically speaking it's the abs. The agonist muscle in a situp is actually the hip flexors.
A bruise on your quadriceps muscle, which is the large muscle in your thigh.
you can do lots of sit ups, it will strengthen your back and abdominal muscle!
It stops your muscle flow.