Short, intense bursts of exercise (like sprinting) can boost heart and lung fitness just as well as longer, steady workouts — and take way less time.
Evidence from Studies
Supporting (2)
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The study shows that short, intense workouts improve fitness just as well as longer, moderate ones in teens, which supports the idea that you can get similar benefits in less time.
The study found that short, intense workouts improved fitness just as well as longer, moderate ones when they burned the same calories, even though intense workouts took less time.
Contradicting (1)
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The impact of sprint interval training versus moderate intensity continuous training on blood pressure and cardiorespiratory health in adults: a systematic review and meta-analysis
The study found that both sprint training and moderate exercise improved fitness, but moderate exercise worked better than sprint training for boosting oxygen use in the body.
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