Slide show: Core-strength exercises with a fitness ball
Photo of woman doing bridge on fitness ball
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To work various core muscles in combination for better core strength, try a bridge with the fitness ball:

  1. Lie on your back with your legs resting on top of the ball.
  2. Tighten your abdominal muscles.
  3. Raise your hips and buttocks off the floor into a bridge (A). Hold for three deep breaths. This works your core muscles and the muscles along your backside — the gluteal muscles and hamstrings — as they contract to keep you in place.
  4. Return to the start position and repeat.
  5. For added challenge, raise your right leg off the ball (B). Repeat with your left leg.
See more Multimedia May 11, 2016