8-The plank jack

Similar to the jumping jack, the plank jack consists of putting yourself in a plank position (facing the ground, leaning on your hands and toes), then spreading your legs and arms simultaneously.

It is a formidable exercise to work both the gainage and the cardiovascular functions. Do series of 30 seconds, as much as possible.

Open next page to continue reading

[adinserter block=”2″]

[adinserter block=”3″]