The modified mountain climber and extension strengthens the core and upper body including the shoulders and triceps. The movement to the side also improves hip mobility while increasing strength in the obliques.
Instructions
Starting in a plank position, drop your knees, making sure to keep your weight positioned on your hands. Straighten one leg behind you, keeping the other knee planted.
Bend your extended leg and bring it out and towards the shoulder of the same side. Your knee will end up parallel with the floor. Reverse the movement and return to the starting position while keeping your leg elevated. Repeat reps and then continue with the opposite side.
Trainer’s Tips
Do not allow your upper back to round at any point.
As you drive your leg back, make sure you squeeze your glutes.
Squeeze your abs throughout the entire movement, engaging the obliques to pull up the knee.
