How to burn as many calories walking as running

If running isn't for you, fitness expert Phil Clark offers a workout hack that could help you burn calories by just walking.

FYI Fitness Tips: Avoiding numbness on the elliptical

More weekly tip videos:

• Choosing the right ab workouts
• Core exercises that help strengthen the lower body
• Exercises to strengthen the leg after an ACL injury
• Effects of ACL injuries and treatment
• The math behind tired marathon legs