Plank is practiced exercise and popular all over the world. This will not only enhance the six pack. If to strengthen every body proportions. You will be amazed with the results when only 5 minutes per day!
.The main, and this is a "floating" above ground by relying on only the arms and legs, of course, the use of time 2 minutes. This isn't as easy . But that'll get you use all parts of the body. The result is back stronger. Tapered legs, a flat stomach and arms at the beautiful clean.