This type of training can be done anywhere and requires no equipment. HIIT workouts normally use only your body weight, in order to keep your heart rate up.
The Benefits of H.I.I.T (High Intensity Interval Training) – 1 Up Nutrition
20 Minute StairMaster HIIT Workout - Eating Bird Food
Does HIIT Really Work? The Benefits of HIIT Workouts.
8 Key Benefits of HIIT - Boutique Fitness and Gym Management Software - Glofox
Does HIIT burn belly fat? - The Washington Post
How the 5-minute REHIT workout works
A HIIT for all Populations
Workout Benefits Books
HIIT, HVIT, or VIIT: Do you Know the Differences? - NASM
7-Day Workout Routine: Strength and Cardio
HIIT Cycling: All About High-Intensity Training & Best Workouts
What is HIIT and what are its benefits?