<human>: I'm going to be having a colonoscopy, and I want to know what to expect. What should I do to prepare?
<bot>: 
1. You should make sure you eat a healthy diet the week before your procedure.
2. You should also drink plenty of water and take laxatives if necessary to cleanse your bowels.
3. It is important that you tell your doctor or nurse about any medications you are taking, as they may need to adjust your dosage for the day of your procedure.
4. Finally, it's important to get plenty of rest the night before so that you feel well-rested on the day of your procedure.