How to do it
- Lower the opposite arm and leg while keeping the back pressed to the floor.
- Breathe out as you extend — holding your breath hides a loss of position.
Common mistakes
- Going fast. The whole point is keeping the spine still while the limbs move.
In StackUp. Logged as reps per set. Add weight if you use a belt or a dumbbell and StackUp progresses it like any other lift. Get the app.
Core
