this is a primary reason why i have some seriously buff calves:
this photo, my friends, was taken at the bottom of the stairs that lead to my office. we are on the third floor. every time i come to work, i climb these stairs. everytime we get a package, i climb these stairs. everytime the door buzzer doesn't work and i have to run down the stairs to let someone in, i climb back up these stairs.
heels are treacherous. i don't wear them very often.