Gluteus maximus
Its large size is one of the most characteristic features of the muscular system in humans,[2] connected as it is with the power of maintaining the trunk in the erect posture.The gluteus maximus is a tensor of the fascia lata, and by its connection with the iliotibial band steadies the femur on the articular surfaces of the tibia during standing, when the extensor muscles are relaxed.A number of exercises focus on the gluteus maximus and other muscles of the upper leg: In cultural terms, the glutes are often considered a symbol of health and strength, and aesthetically appealing.This requires a trained professional and is based on the angle of external and internal rotation in relation to normal range of motion without injury or impingement.[11] Its large size is one of the most characteristic features of the muscular system in humans,[2] connected as it is with the power of maintaining the trunk in the erect posture.While traditionally associated with maintaining erect posture, evidence suggests its enlargement was more likely selected for its role in running capability and trunk stabilization during various dynamic activities.