4 Amazing HIIT Workout Apps for Fitness On-the-Go

4 Amazing HIIT Workout Apps for Fitness On-the-Go

I’m a huge fan of High Intensity Interval Training (HIIT) workouts. For anyone who’s unfamiliar with this type of training, a HIIT is a workout that’s relatively short in duration (think 15-20 minutes on average) and is made up of short periods of intense work (about...