You're faster than me, a man with short hair :). Rinse, gel, shampoo, rinse, shampoo, rinse - but the warm water also cleans the mind and soothes the soul, so I'm not in that big of a hurry to end one of the best ways to relax and unwind I have. It usually adds up to 10 minutes.

I have a family member, also male with short hair, who used to take 20-30 minute showers every day, driving others in the house insane - but that was the "I'm a first-year medical student, I just learned how many bugs there are on everything, and how ugly diseases they cause; also, have you heard of SARS?" effect. Other symptoms include going though copious amounts of hand disinfectant. Fortunately that went away over time, as they improved their feeling for actual risks.

Of course there are other factors, including biological ones, but yes I agree not every woman does this regularly.

Many do though.