By A Mystery Man Writer
This 20-minute bodyweight workout focuses on training one side of your body at a time in order to build strength evenly on both sides of your body.
Four 20-Minute HIIT Workouts
Can you build abs just with body weight exercises? - Quora
A 15-Minute No-Equipment Core Workout to Do at Home
A 20-Minute Advanced Body-Weight Workout
Calorie burn workout: 20 minute bodyweight circuit - Women's Fitness
4-Week Progressive Bodyweight Workout Guide, Fitness
You Can Do This 10-Minute Workout at Home With No Equipment - The New York Times
19 Bodyweight Exercises to Build Strength
20-Minute Bodyweight Workout To Build Abs