Cardio burns calories, but to maximize your workouts, do high-intensity interval training (HIIT) — this is especially effective at reducing belly fat. "The whole workout, including warmup, doesn't need to be more than 45 minutes to be effective," said ACE-certified fitness trainer John Kersbergen. He added that three to four times a week is enough.
Here are some HIIT workouts you can try:
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