ya. your supposed to get a new one after each crash, even with no visible damage. also, helmests are designed for the general population. if you want a strong one, there are specialty ones out there. a few of my friends that have gotten concussions have them. also if you seriously rip and tend to knock your head around a bit, ive heard a littlre about multi-impact/high-impact helmets (different that POC multisport, but I believe similar to the ones for people with concussions)