My favorite piece of exercise equipment has always been dumbbells. That's why it's the only piece of equipment needed for all the workouts in the Life in Spandex 30-Day Sweat Guide. However, there's a close runner up - resistance bands. Mini bands, fit tube, flat bands, I like them all. They fit in my purse, are affordable, and allow you to adjust the intensity of the exercises. Fun fact: I always have at least one resistance band on me at all times :). They're also like dumbbells in that they challenge your stabilizing muscles - think core, hips, shoulders - even when you're focusing on primary mover muscle groups. This helps tone those hard to reach muscles and increases your
