Most of the time, sleeping in is caused by not going to bed early enough. People ‘sacrifice their future selves’ by staying up late watching movies, texting friends, playing video games or returning e-mails. The human body needs sleep and, if it can’t get it at night … it’ll try for it in the morning. The body also needs a consistent routine. People who get up at eleven a.m. on the weekend and then attempt to get up at seven a.m. on Monday are in for a rough road. Another bad habit that causes people to wake up later than they want to includes not preparing properly for sleep. The body needs proper wind-down time so it can get ready for its rest period. This means no work, eating, or television five seconds before heading for bed.