people.eku.edu

M8BK TIL The reason birds can fly at such high altitudes is because their respiratory system allows them to inhale and exhale at the same time, significantly increasing it’s efficiency.
1pY4 TIL The average male medieval peasant ate between 160% to 200% more calories than your average male now. Which kind of explains why it’s so hard to sustain 1500 calorie diets…