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Photo: Slatan (Shutterstock) If you’re new to going to the gym, we have a whole guide to the basic, possibly embarrassing questions that may come up in your head . But today we’re going to zero in on one of the more common things to overthink about: How long a time is it okay to spend on a machine? How long do people spend on cardio machines? A good rule of thumb is that you should try not to spend more than 30 minutes on a cardio machine (like a treadmill, elliptical, or stationary bike) if the machines are all taken and people are waiting. At some gyms it’s an actual rule, and not just a guideline. Pay attention to any signs posted around the cardio area to see if you’re supposed to hop off after a certain amount of time. If there are plenty of open treadmills, though, and there’s no posted rule, you’re welcome to stay on yours as long as you’d like. There’s no such thing as too short a time to spend on a machine, etiquette-wise. Some people like to ride a bike for five minutes as a warmup before moving on to lift weights or do other exercises. If you want to know how long you should exercise, guidelines recommend a weekly minimum of 150 minutes moderate exercise (like walking or light jogging), or 75 minutes of vigorous exercise (hard, sweaty stuff). So focus on the weekly total rather than any one session. How […]