A man is explaining how to exercise with a large purple ball.
A man is out in a field and doing exercises with an exercise ball.
The man is in the park, demonstrating how to work the core with a yoga ball.
A man resets his position on an exercise ball as he gives instructions.
A man is working with and explaining how to use an exercise ball.
A man with black shirt and shorts balances on an exercise ball.
A man demonstrates using a balance ball to do different exercises.
A man is exercising using an exercise ball and showing how to do it in an outdoor park
A man is demonstrating how to do different stretches on a big purple ball.
A man is exercising outside using a big purple ball.