I’m a huge fan of high-intensity interval training (HIIT). HIIT is the most efficient way to improve your cardiovascular system.
Low-intensity, aerobic “cardio” just doesn’t cut it—since it’s your cardiovascular system that supports your muscular function (not the other way around).
You need to work the muscles more intensely to improve your conditioning in an efficient manner. Performing high-intensity exercises for brief intervals, followed by periods of rest, not only improves your conditioning but is also proven to build muscle and boost your metabolism.
But the problem is, most people are doing HIIT without the necessary structure. Sprints aren’t enough to form a balanced program.
This HIIT program provides the structure you need to build and perfect a proper HIIT program for life.