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It depends on physical activity. For people working sedentary jobs, washing clothes after one day is probably not needed. For myself, I find I can wear clothes two days without issue. In the same vein, I like to shower every two days. Of course if I smell myself in the evening I will take a shower regardless of the when I last showered.

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The fascinating thing about showering is that there are quite a lot of ways to reduce your consumption of heating or water. E.g.:

- shower less often (e.g. to have one day every 10 days without showering means saving 10%!)

- shower with cold(er) water

- shower a minute or two shorter (also please stop showering in the middle for the soap)

- use a different sprinkler head that uses less water or don't crank up the tap as much

well, at least I find it fascinating...

seriously, how do you smell yourself? People who have BO don't even know they have it until somebody tells them.

Odor fatigue (aka olfactory fatigue) is the primary reason people don't smell themselves. Generally most people, if they take the time to take a deep sniff of their arm pits, they'll know. Another method is to smell your clothes after you remove them. Asking a partner or trusted friend is also a simple method. Palate cleansing is another method.

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