What Happens to Your Muscles When You Lift Weights?
  • 8 years ago
What Happens to Your Muscles When You Lift Weights?. Part of the series: LS - Weight Training. Whenever you lift weights, a very specific set of things happen to your muscles during that time. Find out what happens to your muscles when you lift weights with help from an expert who served as an Army Combat Medic in the 1st Calvary Division in Iraq in this free video clip.