Primary Muscles Worked: Hip Flexors, Upper Arms, Abs
Mountain climbers are a calesthenic exercise that challenge your coordination, agility and balance. This exercise is similar to a plank, activating many different muscle groups all at once. Begin by laying face down on the floor and straighten arms to a plank. From there bring each knee to chest and alternate right and left for 60 seconds. Be sure to brace your core and keep your back neutral.
Be sure of the following:
1. Be sure to keep your legs stretched out, ensuring that they are properly lined up with the rest of your body.
2. Pay special attention to your knees as many people tend to create a gap here but that should be avoided.