Phil's Bodyweight Gym is a blog that describes various bodyweight exercises you can do anywhere in very little time.
Thursday, April 14, 2011
The mountain climber is an interesting variation of the plank. Start in a standard push-up position; bring one knee towards your stomach; repeat on the other side then start over (always in a controlled manner). This exercise works the entire core, hamstrings, hip flexors and upper arms. Do 2-3 sets of 30 seconds.