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- Body weight
1) Find a wall and stand about a foot or 2 in front of it.
2) Start on all fours. Now, shift the weight to your arms, place one foot securely on the wall followed by the other. You should end up in a plank position - push into the wall to hold yourself in place.
Note: it's important to keep the body straight at all times. Keep the core tight and back flat throughout the movement.
1) Hold this position until the end of the timer.