Hair washing schedule

I work seven days a week usually and try to wash my hair every couple of days. I notice some people wash once a week, but after a couple of days my hair begins to have an odor so it's either wash or stink. I try to wash Sunday, Wednesday, and Friday or Saturday. My hair begins to feel oily before Wednesday so I'm confused on what I should do. I don't want nasty hair, but I don't want to wash too much either. I usually sweat about every day so I'm lost on how to prevent my hair from getting oily.

Any suggestions will be helpful and appreciated.

updated by @keith-lackey: 01/13/15 09:16:20PM

oily hairs mlre oily idf u wash it too much tho 3 times a weeks fine twice a week might just stop the oiliness completely

--
My new book Ban The Taboo Vol 1

What about the sweat though, wouldn't that cause the hair to become oily?

sweat can be rinsed out and if u wash hot but rinse cold that makes u less oily too

--
My new book Ban The Taboo Vol 1