I'll be 25 next month and I'll be applying in July, if accepted that would make me a 26 year old MS1.
I wish I would have had my act together when I started college at 18 but I didn't. I switched majors a couple times, transferred colleges and did a DIY post-bacc.
I look at it this way: I'm 4 years older than the average MS1, that's not really significant. Plus people tell me I still look 18 😛
I feel for the poor bastards who are just starting college at 30+ and want to attend medical school. I have a cousin who's 35 and he's like I'm too old for med school I'll go the NP route.