Incorporating a balance ball into your workouts is one of the best ways to engage your core and take your fitness routine up a notch. But if you don't know what you're doing, it's easy to injure yourself or waste your time. Plus, who wants to be seen flailing around and falling in a class the first time you try it?

This peanut-shaped balance ball is the perfect learning tool, because it lets you get an intense full body workout no matter what your skill level. It comes with a DVD that's packed with toning, strength training, and ab workouts, so there's no guesswork involved. And it'll teach you proper form, so you can practice at home and make your debut at the gym once you're already a pro.

You can buy the kit here. As a first time Joyus customer, you'll get 10% off your order plus free shipping on orders over $50 with the promo code STYLELIST10. (If you're a returning customer, you'll automatically get free shipping on orders over $50). Why not use the discount to pick out a cute workout outfit, too?