Sit up straight in a chair holding the ends of a resistance band in each hand.
The rest of the band should be looped behind your back, or the back of the chair.
If you can, try to sit without using the back support of the chair.
With some tension in the band, keeping your posture up straight, punch one hand forward.
As you bring this arm in, punch the other arm forward.
Continue this movement at a stead pace, trying to increase the speed if you can without losing your balance and posture.
