Night before First Inpatient Visit Before coming to the CTRC for your first inpatient visit, you will be asked to sleep 10 hours for two consecutive nights (from 10 PM to 8 AM) at home. During your sleep, you will be wearing an actiwatch to monitor your sleep at home. You cannot drink any alcohol during this 2 day period. We will send you a text message or telephone you to remind you to sleep during these times and not to drink alcohol. The inpatient study visit will be cancelled if you didn't have enough sleep at home or if you consumed alcohol.