Thirty minutes of aerobic activity is the well-known secret to staying healthy and fit -- even as you age -- but many forget about weight or strength training. Adding strength training to your aerobic exercise, or starting in general, could help reduce other health issues . Dr. Stuart Phillips , the director of the Physical Activity Center of Excellence (PACE) as well as the McMaster Center for Nutrition, Exercise, and Health joins us to discuss why it is important to incorporate weight training