I have to rise quite early for my job (I'm always in the office by 8am) and, like many women, I do a full time job at work and at home so I am ready for bed at 9pm but I usually sit up and watch TV or read.
Some nights I work until 9pm (that means a 13+ hour day at work) and I cannot go to bed as soon as I get home because I need time to 'wind down'.
Luckily, I live three quarters of a mile from my work place (a fifteen minute walk at most) so i can get there and back quickly.
I have never been a night owl so this lifestyle suits me well. Although i go to bed early, I have been a life-long insommniac who finds it difficult to sleep.