By
eHow Sports & Fitness Editor
Difficulty: Moderately Easy
Step1
Stand as you would for a traditional jumping jacks exercise. Your feet should be about hip-width apart with you hands resting at your sides. Keep your back tall and straight and support your body by tightening your abdominal muscles.
Step2
Lift your arms so that your elbows are bent at a 90 degree angle and held directly in front of your body. Jump your legs open as you open your bent arms out to the side. Try to land with your feet heel to toe and jump by first lifting your heels and pushing off the balls of your feet. Add power to your jumping jacks by squatting down as you jump out, helping to add muscle strength to your legs.
Step3
Squat down as far as is comfortable; however, do not allow your knee to extend past your toes and do not sacrifice your spinal posture. Lean forward slightly as your squat, but make sure that your back is straight and your abdominals tight throughout the exercise.
Step4
Squat down and then jump up to your beginning position, drawing your bent arms back to center. Repeat as many jumping jacks as you like, adding this technique to your regular routine for powerful legs and abs.