HIIT is a great, safe, and effective workout, but there's no need to do it every day. Keep it to three times per week. You'll still reap the benefits and give your body time to recover properly.

How many days a week should you do interval training?

Tamir suggests interval training two to three days per week, plus two long duration cardio sessions for heart health; or two to three strength training sessions for weight loss. And if you want to make an interval training session more difficult, simply decrease the amount of rest time.

How often should I do interval training?

Two to three days a week is a solid amount of HIIT, says Wong, as long as you build in 24 hours of rest and recovery between sessions. So if your goal is to work out four times per week, he recommends two HIIT sessions and two resistance training sessions.