If you are a beginner you might want to put your feet shoulder width ... And those are some exercises you can do in your office or just about anywhere with the ball.
Your feet should be about shoulder width apart ... If you have more than one medicine ball, you might find that you want a lighter one for some exercises and a heavier one for others.
Yes, you can do exercises like dumbbell shoulder presses ... bad posture may cause the ball of the humerus (the large bone of your upper arm) to sit inappropriately within the shoulder socket ...
Looking for the best exercise ball to boost your home workouts? Here's everything you need to know, including the ideal size, how to use them and which to buy.