How Do You Know If You're Exercising Hard Enough?

How Do You Know If You're Exercising Hard Enough?http://articles.mercola.com/sites/articles/archive/2004/10/02/exercise-hard-enough.aspxIf you are able to talk while you exercise, you probably are performing at a proper intensity level, according to researchers who support the "Talk Test." The "Talk Test" is a method of judging the intensity of exercise and can beenCommunityServer 2008.5 SP1 (Build: 31106.3070)