667This entry was posted in Daily 20-Min Workouts on June 8, 2017 by OPEN GYM Fitness 4 Sets of: 5 Back Squats 10 Pull Uos 15 Ab Rollouts on wheel or ball 4 Sets of: 5 Deadlift 10 Dips 15 Hanging Knee Raises 4 Intervals of: AirDyne Bike :20 sprint / :40 slow