I am going to assume that you must be living in some kind of tropical forest if you this showering twice a day is a norm
I will add that I am fully convinced that you don't need to shower everyday in most western climates or also do sports every day (you should shower after every sport, really). But personally, I am fine showering every 2-3 days (I strive to do every 2 days but going 3 days doesn't seem to make a noticeable difference). I sit on my ass all day in a colder climate, so really don't sweat much during a normal day. Body odor is mostly genetic anyways and I seem to be lucky because even when sweaty, I won't start smelling (but I still feel sticky and icky). And hygiene goes beyond how much you shower every day, fresh clothes every day go a long way. That might seem obvious, but I have seen a few people who walk around in the same shirt for more than a week.
Also showering every day is bad for your own skin oils and whatnot so unless you live in like Thailand.