The gluteal muscle.
The large muscle on which you sit is the gluteus maximus. It is the largest muscle in the human body and plays a crucial role in various movements, including hip extension, outward rotation, and maintaining an upright posture. The gluteus maximus also contributes to activities such as walking, running, and climbing.
your gluts, abs, and your intogalactibal muscle.
ur abs
sartorius
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.
In a sit-up, the primary agonist muscle is the rectus abdominis. This muscle contracts to flex the spine and bring the torso towards the thighs. Other muscles, such as the hip flexors, also assist in the movement but the rectus abdominis is the main muscle responsible for the action.
The prime mover during sit-ups is the rectus abdominis muscle. This muscle, commonly referred to as the "abs," contracts to flex the spine, allowing the torso to lift towards the knees. Additionally, the hip flexors assist in the movement, but the rectus abdominis is the primary muscle responsible for the action.