Mountain climber exercise
The mountain climber exercise is a great way to tone up those ab muscles, with a relatively short but intense burst. The starting position is similar to a straight arm press up with your arms locked and your body as straight as possible down to your feet. Pull your left knee up you towards your elbows, with your left foot touching the ground (as if you were in the blocks waiting to start a 100m race!), with your back right
Read more