7. Slider Knee Tuck
You’ll need sliders or towels for this move.
From a high plank position with both feet on sliders, brace core and pull both feet in toward your chest. Focus on not letting your shoulders hunch and not allowing your upper body to lean forward too much. Push feet back to return to high plank starting position.
Stability Ball Variation
If you have a stability ball handy, try this variation instead: Start in plank position with feet on a stability ball. Keeping core engaged, draw both knees in toward your chest, then slowly extend legs back out to starting position.
8. Rolling Plank
Start in low plank position on forearms. Hold for 10 seconds, then roll on to your right elbow, stacking feet, and hold side plank for 10 seconds, engaging your obliques. Roll back through center and over to the left elbow, stacking feet, and hold 10 seconds. Continue to alternate, keeping core engaged and not letting your hips drop.