Side Plank Oblique Crunch
To do the Side Plank Oblique Crunch, set up in a side plank from your hands and feet with your feet stacked and your hand under your shoulder. Lift up and keep your bottom hip up as you hold. Flex your foot to help engage your leg all the way down.
Then, holding this side plank position, extend your top hand over your head (not up toward the ceiling) as you lift your top leg up. Crunch your elbow to your knee without letting your bottom hip drop. Move slowly to crunch and then extend your arm and leg back out before repeating the crunch!
Beginners can do this move from their knees or even off an incline. Even regressing to your elbow can help modify the move. In the video, I show the Side Plank Oblique Crunch from both the forearm and feet (shown first) and the hands and feet.