I usually wake up at 6:30 a.m., but my sister always wakes up at 7:00 a.m. I go to the gym twice a week, but my sister never exercises. On weekdays, I often study at the library after lunch, while my sister studies at home. I sometimes cook dinner on weekends, but my sister rarely helps in the kitchen. I check my email every morning, but my sister only checks hers in the evening. I usually go to bed at 10:30 p.m., and my sister stays up late almost every night.