The Body Part of a Man that Women Love..

Ron Coleman

Lower abdominals is a colloquial term for the lower part of the Rectus abdominis, which is the muscle that is located in the human torso area known colloquially as the "six pack". It is a common misconception that the lower abdominals are a distinct muscle

The crunch, also known as curl-up, is one of the most common exercises for the abdominal muscles, primarily the rectus abdominis. It is considered a safer alternative to the sit-up[citation needed].Crunches over Situps.

Proper starting form is lying face up on the floor with knees bent. The movement begins by curling the shoulders towards the pelvis, with hands placed lightly behind or beside the neck, or crossed over the chest. Using the hands to exert force on the neck can cause injury, so common practice is to avoid placing the hands behind the head itself. The hands can however form a shelf to support the weight of the head so that the neck flexor muscles can relax during the movement. So long as the neck remains in an extended position with the neck flexors relaxed, then the hands are not exerting excessive force and it will not cause injury.

Source: www.wikipedia.com