If you’ve already given a few of our 7-minute workouts a try — and maybe those 7-minutes of you time working out have become a bona fide habit — remember that you can always extend it. If time becomes more available, you can tack a 7-minute arm workout onto that 7-minute leg workout, and you’ll still be coming in at 14 minutes. (If you’re feeling really ambitious, you can knock out all three of our targeted 7-minute workouts (get your core-work on!) at once—and spend a whopping 21 minutes doing it.)

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