21-Day Shape-Up Plan. Randi Berez The key to scoring a hot body?
Committing to a plan that's easy to fit into your busy schedule (we're talking 30-minute workouts here) and lasts exactly 21 days. Experts say you can start to form a habit in as little as three weeks, and habits are hard to break. In other words, once you complete this program you'll be motivated to keep going. How the Plan Works: Each week, you'll do six workouts: two total-body toning routines, two fat-blasting interval workouts, and two easy, results-enhancing recovery sessions. 15-Minute Lower-Body Workout.
It's the region most of us love to hate—our hips, thighs, and backsides.
For a lower body you’ll love, you need to do two things: burn fat, and lift and firm your tush. This routine does both. Do these seven moves one after another with no rest in between. Then repeat the circuit so you perform it a total of two times. CIRCUIT 1.