By real people did you meant people who are not thin? If that is it (the part about gyms gives it away so that this is what it means) then again I am reminded that I am not real
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Anyway as for the subject you do not need to do hours of exercises and/or sports every day to be fit. Go on YouTube and there you will find thousands of videos of exercises and workouts; there's no way that there are none that could be done by you!