The human brain is more active during sleep than during the day.
28
A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
194
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
You burn more calories sleeping than you do watching television.
348
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13