CKO Kickboxing
While Gigi Hadid may swear by kickboxing workouts to get her runway ready, we all can’t make the list of the world's highest paid models (as much as we may try). Nevertheless, kickboxing is a great workout for all fitness levels, and, as it turns out, all incomes. Not only can it raise confidence levels, reduce stress, build muscle, and burn up to 1,200 calories, but gyms like CKO Kickboxing allow you to do it for free on your first visit.
[Photo via @brittallennn]