20 Week HIIT Workout Plan- High Intensity Interval Training
Check out this 20 week high intensity interval training (HIIT) workout program that’s perfect for anyone from beginner to advanced. Broken into five 4 week blocks we’ll build from a 1:3 (10 second work to 30 second rest) to a 3:1 (30 seconds work to 10 seconds rest). Like most HIIT workouts this can be…