Astrid Mc Guire

Three women of equal height, weight, age and fitness levels determine if the elliptical trainer, stationary bike or treadmill burns the most calories in one hour.

Learn why your food spoils faster than it should, how long an unsightly pimple will last and the maximum hours of TV your child should be watching. Plus, the most effective one-hour workout!

While maintaining a healthy diet can improve your health tremendously, choosing to stay active is just as important. Certified personal trainer Astrid McGuire demonstrates key exercises to tighten up your three most troublesome body parts!