Copenhagen Plank: how to do it right
In short: On your side, top leg resting on a bench. Lift your hips and hold, body aligned.

How to do it, step by step
- 1On your side, top leg resting on a bench.
- 2Lift your hips and hold, body aligned.
The mistake to avoid
Don't let your hips drop: as soon as they sag, the hold doesn't count.