Dumbbell Mountain Climbers
Grasp two dumbbells and assume push up position. Extend body, place dumbbells directly beneath your shoulders. Your body should form a straight line from your shoulders to your ankles.
Squeeze your abs, lift right foot off the floor and bring your knee up towards your right elbow while keeping your body in as straight line as possible.
Return to the starting position and repeat the movement with your left leg. Repeat the exercise according to the training plan alternating legs.