Better-Butt Challenge: A Lazy-Girl Workout You'll Love

Our Better-Butt Challenge has 21 days of workouts to help you take your butt from flat to full. In the end, you’ll have a tighter, stronger backside. Be sure to check back tomorrow when we share the next workout of this three-week plan. Welcome our Better-Butt Challenge! Good news: for today’s workout, all you need…