Standard sit-ups on the floor or a slant board are no challenge for most experienced lifters—but try doing them while hanging upside down, and you might be humbled!

Another great exercise using gravity boots is the inverted squat. Unlike inverted sit-ups, which involve only hip flexion, inverted squats require bending at both the hips and knees. If needed, you can assist yourself by pulling on yoga straps suspended from the chin-up bar or by gripping your thighs. However, be sure to lower yourself back to the starting position under control without assistance.

For best results, try sequencing this movement between sets of squats or deadlifts.