Shaper: Modified Weighted Hundred
Targets: Abs, deltoids, and lower back
- Sit on floor with knees bent, feet flat, holding a heavy weight in each hand, palms facing floor.
- Lean torso back 45 degrees and lift arms forward, keeping them straight, about a foot off floor so weights are on either side of thighs.
- Keeping abs tight and back straight throughout, pulse weights up and down 1 inch -- that's 1 rep.
- Do 20 reps. (Build up to 40, depending on your fitness level.)