How often do you shower?
I would say around every other day when not in pain and depressed. If I am in a worse condition; about five days. Which I know seems a bit extreme but there are reasons outside of my MIs where the physical pain is unbearable. Oh, and on occasion, I take a bath after I clean the tub. Nothing feels better than a bubble bath and salts with music playing in the background.

How often do you brush your teeth?
Once every night.

Wash your hair?
Every other day. Apparently it is healthier for the scalp if one washes it that way, but if you sweat a lot that may be tricky.

Shave your legs?
Only during spring, summer, and early fall. Otherwise, I let it grow out because no one is going to see my legs in the cold.