PopsugarFitnessWorkouts30-Minute Arm and Ab Bodyweight Workout From Val DesjardinsTry This Celeb Trainer's 30-Minute Bodyweight Workout — It's Just 5 Moves, but It's Intense! October 18, 2020 by Jenny Sugar View On One Page Photo 4 of 6 ADVERTISEMENT () Start Slideshow Share This LinkCopy ← Use Arrow Keys → 4 Chest Fly to Leg Raise and Deep Core Flexion Lie on your back with your knees bent at a 90-degree angle.As you extend your legs up to the ceiling, crunch up to engage your core, reaching forward to connect your hands behind your legs.Make sure you're lengthening your legs up as much as possible to get the added benefits of the flexibility work.Repeat for 30 to 90 seconds, followed by a zero to 15-second rest.PreviousNext Start Slideshow WorkoutsStrength TrainingBodyweight ExercisesBodyweight WorkoutsAb WorkoutsGIF ExercisesIntermediate Workouts30-Minute WorkoutsArm WorkoutsArm Exercises