24 hours
- 8 hours sleep
- 8 hours 9-5 job
- 1 hour for travel
- 2 hours with family
=> so... I do not eat, I do not take a shower (or I can take a shower with my family), in my experience it's more 3 than 5 hours of free time, minus some time to change my state :), it's not like going to sleep mode is like an instant sql update.