Don't be afraid of its wobbly nature. Start with the easy option of standing on the ball side, so the flat surface is on the floor, until you feel comfortable. How do you use it?
Stand on the dome side to do squats or step-ups, or turn it over, so the domes resting on the floor, to perform press-ups or mountain climbers.
We should use the BOSU, because it will will help improve your balance, core stability and co-ordination, plus tone your body by activating the small stabilizing muscles.