it's 5:00 in the morning when the alarm (闹钟) rings in my ears. i roll out of bed and walk blindly through the dark into the bathroom. i turn on the light and put on my glasses. the house is still as i walk downstairs while my husband and three kids sleep peacefully. usually i go for a long run, but today i choose my favorite exercise dvd, insanity. sweat pours down my face and into my eyes. my heart races as i force my body to finish each movement. as i near the end of the exercise, i feel extremely tired, but a smile is on my face. it's not a smile because the dvd is over, but a smile of success from pushing my body t