Jennifer Renfroe, Regional Group Fitness Dir., Crunch, Atlanta A lot of squats, a lot of lower body work, you know, get down real low and pick up your towel It's really a sculpting and cardio ...

People swear by it to strip away body fat in as little ... and one day of low-intensity, steady-state cardio. RELATED: A 69-Year-Old Fitness Trainer Shares the 6 Exercises That Keep Her Looking ...

People swear by it to strip away body fat in as ... a healthy balance of strength training and cardio is key. There are plenty of effective numbered workouts out there, but the 4-1-1 may just ...