I think you (and I) being in our 60s are exactly who this protocol is designed for and the studies linked in the doc bear that out. All three of these peptides diminish as we get older, so this is a way to replenish our mitochondrial factories. I read that the decline starts around 40. That's important because, as it was pointed out to me, these dosages are fairly high for someone under that age. Peptides, in my view, are for people trying recapture some of that vigor they used to have at 30, not for a 30 YO to become 10 again. You can't optimize an optimal system any further and 20-30's is when these levels peak. I would just caution that younger people take that into account when trying to replicate this protocol.