There’s a lot of buzz around High-Intensity Interval Training, a.k.a. “HIIT”. Research studies highlight its effectiveness and time-efficiency for fitness development and calorie burning. New HIIT-centric gym concepts are being heavily marketed.
HITT interests me because of its inherent fitness benefits, and because it often combines endurance and strength work in an intense way.
I’ve started checking out HITT gym concepts and at-home workout programs, to add HITT into my own mix and also share findings via OlderBeast. This is the first of several reviews, starting with Orange Theory Fitness (“OTF” for short here).