Light Weights Build Muscle
It may seem like a no-brainer that big muscles are born from heavy lifting, but researchers found that light weights can build muscles just as well as the monster weights. In the study, 18 men without recent weight training had their muscle mass measured and then submitted to 10 weeks of supervised leg extensions three times a week. Legs that trained by lifting light weights until reaching a point of fatigue gained just as much muscle as those trained with heavy weights.
Source: Journal of Applied Physiology, published online April 19, 2012
Safety Note: Check with your health care provider before making big changes in your exercise plan, which could require adjustments in your meds, foods, or other treatment.