10 Quirks Of Evolution That Are Ruining Your Life

The dreaded stitch is definitive proof that God never meant for us to do exercise.

You try to be good, buy all the gear, the gym membership, limber up, hop on a treadmill and BLAM a thousand knives made of snakes and hate pierce your side. No thanks.

Experts still can't seem to agree on what exactly causes a stitch, but they're pretty sure it's something to do with the diaphragm (the muscle that sits just below your lungs) and blood flow thereof.

One theory suggests that the expansion of the lungs coupled with the squeezing of your core muscles during exercise can cut of the blood supply to the diaphragm, causing it to spasm. Unfortunately, the nerve that supplies the diaphragm also supplies the right arm and chest, meaning that when you get a stitch your body actually thinks that you're dying of a heart attack.

Another theory is that when we run, our internal organs get jiggled up and down so much by the impacts that the connective tissues keeping all your insides on the inside actually tug on the diaphragm.

This is all just confirmation that you should really stay at home and marathon Netflix Originals rather than spending your hard earned cash on pain and unpleasantness at the gym.