How Interval Training Works
If you're wondering how interval training works, it's actually pretty simple. By going hard for a stretch, easing up, and repeating the process, you give your muscles time to recover from the stress of working out. The low-intensity stretches also help reduce lactic acid buildup in the muscles, which can actually reduce muscle pain. Studies have shown, no matter how fit someone is before they begin interval training, this form of exercise increases both the body's use of fat stores and overall fitness levels. Interval training even boosts enzyme activity in the muscles. Alternating bursts of high-intensity exercise with low-intensity movements has also been shown to increase metabolism, which, when it's balanced with a healthy diet, interval training can help individuals keep extra weight off permanently.
Learn about the importance of warming up next.