Plank:

Assume push up by stacking your wrist, elbows and shoulders upon one another. Then isolate your core by pulling your belly button towards your lower back. If you cannot support your upper body, you can start by doing the plank with your knees on the ground.

Challenge

Lets take this challenge up a notch! Challenge yourself every two days with ten seconds increments. Let us begin with 30 seconds and build from there . Your goal is to achieve 180 seconds by the end of the month. Make sure you keep track of your improvement on Training Peaks.

Example