Don't just swing your legs; focus on "crunching" your ribs toward your pelvis.
Goal: Raises the heart rate to help burn the fat layer covering the abdominal muscles. Don't just swing your legs; focus on "crunching"
How: Start in a plank position and drive your knees toward your chest as fast as possible while maintaining a flat back. Don't just swing your legs
How: Lie flat and lift your shoulders and legs slightly off the ground, forming a "banana" shape. Keep your abs tucked in tight. Don't just swing your legs; focus on "crunching"