A man is sitting down on a medicine ball and is having a conversation
A man is on a exercise ball and showing what he is going to try to do.
A man demonstrates using an exercise ball to sway his hips.
A man in a plaid shirt and jeans is speaking and sitting on a gym fitness ball.
A man is sitting on a large inflated rubber ball and shifting his torso from side to side.
A man is sitting on an exercise ball, talking about what he's doing.
A man is sitting on an exercise ball instructing how to do an exercise.
A man is demonstrating an exercise on a big ball.
A man demonstrates balancing on a large exercise ball while explaining it.
A man is sitting on a big ball and moving side to side as a exercise