How to Stretch a PNF hamstring

This is a presentation about PNF (Proprioceptive Neuromuscular Facilitation) Stretching exercise especially for guys. The first is hamstring stretch. In this stretch the body have to resist some blocks or holding desks and then push down our body when the leg is stretched in the blocks and we have to repeat this procedure for 4 or 5 times. After this stretching, we can able to move our body further and further. Then, the second is groin's stretching and we have to keep our body in the floor and then keep our body against the blocks for flexibility . By pushing back the groins against elbow and it will activate the groins. This two stretch out is basically recommend for increase the flexibility.