Do you have to wear a helmet on a bicycle in TN?

Excuse me, I was wondering if you could clarify something for me. The paragraph mentions the requirement of wearing a helmet on a bicycle in TN, but I'm not entirely sure if this is a universal rule across the state. Could you elaborate on whether or not wearing a helmet is mandatory for all cyclists in Tennessee, regardless of age or the type of bicycle being ridden? Additionally, are there any exceptions to this rule, and what are the potential consequences for not adhering to it? Thank you for your time and clarification.