It takes about 20 seconds for a red blood cell to circle the whole body.
102
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
The human brain has the capacity to store everything that you experience.
4k
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Our Right Lungs takes more air than our left lung.
194