The Mountain Climber is a bodyweight exercise that serves not only to tone or strengthen your abs, it is also a great full-body workout. It is a killer exercise that gets your heart rate up fast, then engages multiple muscle groups at once helping to improve your balance, agility, coordination, strength, flexibility and blood circulation. The best part? You don't need any equipment at all--you can do mountain climbers anywhere and at any time.
This should be a fast movement so try pick your feet as fast as you can but if you're new to mountain climbers, take it slowly, and increase your leg speed as you get more confident and experienced at the exercise.
Hilda Amaral--Portuguese World Natural Bodybuilding Federation President, nutritionist, and personal trainer--shows us how to do this killer exercise in this video: