For a sculpted stomach, you'll need to work out every single muscle in your core. Celebrity trainer Tracy Anderson shows you how to do four powerful variations on the plank, designed to tighten and tone your middle. Do these moves six times a week, paired with 30 minutes of cardio, for major results. | Health.com
Doing the 21 Day Fix can produce some amazing results if you follow the program correctly. In fact, the program is one of the best in regards to ensuring proper portion control and fitness routines, so much so, that it is one of the most programs I recommend most often.