With the ability to get an effective toning and tightening workout for your hamstrings, while providing a workout for your core as well, the glute ham machine is becoming a popular component in many gyms.
Before the glute ham machine existed, the best way to tone this area was actually to position your ankles beneath the bar of a Smith machine, with your knees on a padded surface.
So a machine and a workout that gives you the most effective glute and hamstring workout available, while also allowing you to target your lower back and your core is a big plus.
The American Council on Exercise, otherwise known as ACE, published a definitive study which compared the effectiveness of the various glute exercises.
This move borrows from the strength training camp to provide a quick thigh and glute muscle-building workout during your aerobics exercise.