Reverse crunches target the lower abs and tone the lower belly pooch by working the rectus abdominis, transverse abdominis ...

Mountain climbers involve the same type of lower-body motion as the reverse crunch. Begin in plank position. Bend one knee, bringing it toward your chest. Return to a plank position, then bring ...

The Bottom Line: Ditch the sit-ups. These bodyweight exercises are smarter, tougher, and deliver more bang for your buck.

The trainer suggests starting with easier versions like partial crunches (lifting the shoulders a little off the ground) or bent-knee crunches ... core exercises, like planks or pelvic tilts ...

Examples include the plank and knee-to-chest stretches. Stretching the back muscles after completing a back-strengthening routine can help prevent muscle soreness and injury. It may also provide ...

Our volunteers did this 4 times per week – alternating days. Following a single plank set to warm up, held for 20-30 seconds, the group completed 3 sets of each of the 6 main exercises.