6. Reverse Crunches
Reverse crunches are a controlled movement that works the lower core. Lie on your back and bring your knees toward your chest. Gently lift your hips a little from the floor, then lower them back down. The movement should be small and steady, not a big swing of the legs.

Try not to use momentum. The exercise is more effective when the core lifts the hips slowly. Keep your shoulders relaxed and your neck comfortable. Start with just a few repetitions, then rest. Quality matters more than doing a high number of reps.
