Why do you get shocked by chairs?

Getting shocked by chairs is often due to static electricity buildup. When you sit on a chair, especially if it's made of certain materials, friction can cause electrons to transfer between your body and the chair, leading to a charge accumulation. When you then touch a metal object or another person, the stored charge can discharge, resulting in a small shock. This is more common in dry environments where humidity is low, as moisture in the air helps dissipate static charges.