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

Discover 7 effective core exercises that go beyond basic crunches to tighten your stomach, improve posture, and enhance daily ...

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 ...

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 ...

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 ...

Keeping a strong core is vital for good health and stability, particularly if you sit at a desk for long hours ...

Then, crunch the right elbow down and bring the right knee up toward the elbow. This is working the right side obliques. Repeat this 10 times on the right, then switch sides. Come into a plank ...