Start on your hands and toes at the top of a press-up position.
Keep your body in a straight line.
Press your hands against the floor and then shift your weight over to one arm.
With your other arm reach as far as possible out to your side away from your supporting arm.
Lightly touch the floor at the furthest point before returning to the start position.
Next, reach your arm forwards and across your midline.
Lightly touch the floor at the furthest point before returning to the start position.
And finally, reach your arm backwards and across your midline.
Lightly touch the floor at the furthest point before returning to the start position.
Repeat.