High-intensity interval training affords big benefits in fitness and health without investing a lot of time. The training combines short bursts of vigorous exercise, followed by periods of rest.

The American Council on Exercise says it’s good for you because:

• It offers a major boost to your anaerobic and aerobic fitness.
• It increases sensitivity to insulin and lowers levels of fasting insulin.
• It helps decrease fat just under the skin and abdominal fat.
• It offers significant results in a short time.