A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Your heart will pump about 212 million liters in its lifetime.
26
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139