Here’s a photo of myself from about 12 years ago, when I had what I call (at least for myself) vigorous health.
The mountain in the background is called Mailbox Peak. It’s about 30 minutes east of downtown Seattle, and, because it’s 4000 feet of “straight up,” without any gentle switchbacks, it’s commonly used as a quick training hike (4-5 hours?) for climbing Mt. Rainier. It’s a difficult hike, but relatively safe, except in winter, when there is an avalanche risk.
Anyway, at the time this photo was taken, it was not uncommon for me to “knock one of these out,” perhaps after a morning 90-minute yoga class or a 60-minute treadmill run. It was a core part of my training activities when I had something big in the works, such as a trip to the Andes to climb Aconcagua (subsequently unsuccessful), or an adventure in Tanzania to climb Kilimanjaro (priorly successful), or maybe, just maybe, Denali (never attempted).
But times change. Partly because of age, and partly because of health issues (some within my control, some not), I won’t be “knocking out” any Mailbox Peaks in the future. (And that’s OK because I have other pursuits which bring me a different type of joy.)
But let me give some direct advice, which I am usually loath to do:
If you are fortunate enough to have vigorous health, then do the vigorous things, because in time, when that health is lost, these things won’t be achievable.