Yepp, especially if it's night shifts. I'm usually super busy during the day and evenings, but when I've had night shifts it's usually slower. Patients are asleep (usually), there might be something prep to do for the morning but it's generally calmer than during the day. It's so easy to sit down, have a coffee and a snack.  I tend to either drink some coffee or do some pushups to get my energy going when things are calm.