The Ultimate Guide to Interval Training - Only have minutes a day to exercise? Try this high intensity workout to burn fat. There are great benefits to interval training like weight loss and heart health.
The Very Best 21-Day Fitness Challenge We've Seen So Far
Get In The Best Shape of Your Life With REDBOOK's Strong Sexy You Challenge - Full Body Workout - We don't mean to brag, but this year, we've developed a super simple plan with serious results in mind. The first 21 days
Mix cardio bursts with strength training to amp up the calorie burn. This workout from Hayden Panettiere's trainer, Heather Dorak of Pilates Platinum, will work you from head to toe, and all you need is set of five-pound weights.