Answer: To the best of our belief, the most powerful muscle in the body is probably the gluteus maximus.
This is the muscle that makes up the buttock region of the body and is also one of the body's largest muscles.
It starts from the external surface of the ileum and dorsum of the sacrum (pelvic region). The gluteus maximus extends the thigh and helps in rotating movements. This muscle is the main extender of the thigh. It also functions to raise the trunk of the body from a flexed position.