Why men are tying up their arms at the gym to build muscle

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AApCjjo.img?h=100&w=100&m=6&q=60&o=f&l=fThere are no shortcuts to getting fit - it takes hard work, dedication and, usually, a fair few visits to the gym.

أكثر... (http://www.msn.com/en-in/health/fitness/blood-flow-restriction-why-men-are-tying-up-their-arms-at-the-gym-to-build-muscle/ar-AApHuoI?srcref=rss)