First Emo haircuts came under fire, now it’s skinny jeans. According to Dr. Karen Boyle from Greater Baltimore Medical Center, tight jeans can press on a nerve in your thigh causing numbness, tingling and even pain. This is an actual disorder called Miralsha Parasthetica, and if left untreated can cause permanent nerve damage. You can avoid problems by getting skinny jeans that are a size larger or have a little bit of stretch to them. And, for guys, skinny jeans pose the additional problem of keeping your testes too toasty which lowers your sperm count—so, I guess the solution there is go pantsless?