The Key to Muscle Growth is Lifting to Failure, Not the Amount of Weight

According to a new study, if you want to get strong and grow muscle, it's ok to use light weights, but the key is to lift until you can't anymore. This may be important for runners, particularly older ones like myself that want to reverse age-related muscle loss but avoid potential for injury that may occur with heavy lifting. For more information, go to runnersworld or the globe and mail.