Get into Low Plank position (plank on your elbows/forearms), feet slightly wider than hip-width with straight legs. Shift your balance onto one arm, and with the un-weighted arm, reach under your chest and as far to the opposite side as possible (as if reaching for a glass of water beside you). Return to Low Plank and repeat to the other side.
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![3 x [3 x 3] Bodyweight Workout](https://s3assets.skimble.com/assets/1376919/skimble-workout-trainer-exercise-prisoner-squats_square_full.jpg "3 x [3 x 3] Bodyweight Workout")
