Most SF soldiers of that age will be the first to admit that they dont have the physical condition they had in their 20’s….they have more experience though, which in their line of work counts for a lot.
When i was heavily into weights and power lifting in particular it was widely accepted that a male reaches his physical peak (strength wise) in his mid 30’s….top level athletic performance beyond that point is the exception rather than the rule, look at any number of sports (including DH mountain biking), Peaty is one of those exceptions.
I’m not knocking blokes of that age (i’m 35 myself) and guys like Troy Bayliss, Ryan Giggs, Jason Leonard, Steve Peat etc are hugely inspirational to those of us who waved goodbye to our 20’s some time ago….all the time he can race with the kids then he should absolutely be there, when he is finally off the pace he can retire with his head held high.