The heart is the hardest working muscle in the body. Every day, it creates enough energy to drive a semi-truck over 30 kilometres. Over a lifetime, that’s equivalent to driving to the moon and back.
The brain is 60 percent fat, but it still works hard. At any given time, your brain can generate up to 25 watts of power – that’s enough to power a light bulb.
A person will die from lack of sleep sooner than they will from starvation, which usually takes a few weeks.
Your brain is always working, and it is actually more active while you’re sleeping. Scientists say the average person has roughly 70,000 thoughts each day.
You’re born with more than 300 bones, but by the time you’re an adult, you have just 206. This is because some of the bones fuse together.
Womb with a view
Babies in the womb grow 8,000 new brain cells every second. Newborn babies can recognize their mother’s face after just a few hours.
The brain itself doesn’t have any pain receptors, so it doesn’t feel anything. That is why surgeons can perform open brain procedures on patients while they are awake.