Perhaps there's one beneath your bottom right now. Certified personal trainer Derek Tresize points out, "You can do so many exercises on a ball; they're a great space- and time-saving option.
Perhaps there's one beneath your bottom right now. Certified personal trainer Derek Tresize points out, "You can do so many exercises on a ball; they're a great space- and time-saving option. … You ...
The fitness expert says you can get a full ab workout using an exercise ball at home Credit: Chloe Inspires Also known as Swiss balls, physio balls or stability balls, they can put your balance to ...