Mountain Climbers train your core muscles and arms.
Maintain a stable position throughout the exercise by keeping your shoulders above your hands, your feet at shoulder width and your body as flat as a plank by engaging your core muscles (abdominals and lower back) throughout the entire exercise. Don’t raise or sink your hips during the exercise.
As you support you weight on your hands and engage your core muscles, lift your right foot slightly off the ground and bend your knee towards your chest, then return it to the starting position. Repeat with the left knee. Alternate back and forth between the right leg and left legs, as if you are walking or running.
In the ABC 100 circuit, complete 20 mountain climbers (bring each knee to chest 20 times). When this circuit becomes too easy, you can complete the ABC 200 circuit by doubling the number of repetitions to 40 mountain climbers.