A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
If you stay up all night your body burns an extra 161 calories
You get a new skeleton every 10 years. Bone cells are constantly renewed and a new skeleton is ready every 10 years.
Facial hair strongly influences women’s perception of men’s attractiveness, health, masculinity and parenting abilities.
If your hand or arm ‘falls asleep’, you can often 'wake it up’ by shaking your head.