Quote Originally Posted by emily_in_nc View Post
What's a chewy? I mean, my dog has one , but in relation to people? Just curious b/c I truly don't know!
OTs sell these things called Chewy Tubes for kids with sensory issues, they're just tough little rubber tubes shaped like a little hammer with bumps and stuff for chewing on. Mine isn't as sophisticated, I just got one of those teether things they sell at the baby store. They function like chewing gum. Only about a few hundred times tougher.

Chewing helps to give sensory input which can heighten a person's concentration. That is why sometimes, people like to chew gum, pens, pencils or snack while doing concentration heavy work.