Pilates Mini Stability Ball
This piece of equipment was made to fire up your core and that is exactly what it does. I love adding this ball to my routine for 2 reasons.
1. The burn.
It makes any core workout more intense and makes you use core muscles that you’re not accustomed to using all the time.
It doesn't only fire up your core, it can be used between your legs for some serious inner thigh and glute work or squeezed between your hands to strengthen your upper body.