"I do not take a shower in the morning."
Abite is just a conjugation of abiru to take a shower. It is a ru verb (ends in ru). STEM: ABI + RU. As you notice when conjugating you drop the ru and add different endings. When you want to say the -ing form in japanese its STEM+ TE + IMASU. Eg: Abite imasu =bathing Shite imasu= doing (something) Kaete imasu = returning (home) Kakite imasu = writing hope this helps