This will be just as triggering as not using sunscreen

You don’t want to wear a helmet when the primary concern is a concussion. I would never wear a helmet Snowboarding. I would wear a helmet mountain biking.

Well, here is my relevant data:
1) I live in Hawai'i and never wear sunscreen (just avoid peak sun).
2) I never wear a helmet biking.
3.) The first time I went mountain biking (2011, Colorado), I decided to wear a helmet. Ended up flipping over the handlebars and landing on my head.

@backpack put a bank in your pocket and use your money whenever, wherever, however without permission

/backpack
/notdevin
icebreaker.xyz/notdevin