Is sleeping with wet hair really bad for your eyesight or will it result in headaches? My mom has been telling me this for years but I'm not sure if it's based on scientific fact.

It's like pasma actually. Our parents and grand parents always tell us that don't take a bath before going to sleep, "mapapasma" ka. As per doctors, pasma doesn't have any scientific basis. We get sick because of viral infections not by taking a bath in the evening or going to bed which makes sense. Professional athletes take a shower right after their games and they don't get sick at all. In fact, taking a bath or shower after games is beneficial, it relaxes the muscles actually.