• Lie on your back, knees bent, hands behind head.
    Crunch up, flexing the spine and your abs.
  • Lay on your back with knees bent and your feet together.
    Keep your arms extended overhead. Swing your arms to generate some momentum and sit up.
  • Begin in an elbow plank position with your core engaged.
    Bring your right knee towards your right elbow.
    Return to plank, then switch legs quickly. Repeat.
  • To perform a bodyweight mountain climber, start in a plank position with your hands placed directly under your shoulders.
    Bring your right knee towards your chest, keeping your foot close to your hand. Quickly switch legs, bringing your left knee towards your chest.
    Continue this movement, alternating legs, at a slow pace for a set amount of time or repetitions.