I have a strong urge to pique your interest in this old school system of training. You see, high intensity interval training (HIIT), while around for nearly 100 years, has had a major resurgence in gyms everywhere over the past…


I have a strong urge to pique your interest in this old school system of training. You see, high intensity interval training (HIIT), while around for nearly 100 years, has had a major resurgence in gyms everywhere over the past…