This 45-Minute HIIT Workout Guarantees an Exercise High

Here's a myth about HIIT workouts: they're only for the super fit. The misconception probably comes from the name. High-intensity interval training sounds, well, intense. But, "HIIT is absolutely beginner friendly. I do HIIT with an 80-year-old client!" says Danielle Gray, CPT, SFC, CES, CKT, …