I'm 64 and just had my reg physical and all the lab work, cardio etc. My doc said they must have mixed up my results with a 30 year old. They had to stop me on the stress test cause I just kept going, and going...I'm older than him by a couple of years but only because I've been under the care of a cardiologist for the last 15-20 years. Get yourselves checked out, folks! You never know.
IK, sounds like a humble brag, but I chalk it up to intense exercise, endurance type stuff (hardcore gravel cycling in my case), and diet. My diet is hearty but super clean. I also take absolutely no pharmaceuticals unless it's dire(most of them are poison). Haven't had so much as an aspirin in years. Very lucky of course. At any rate, while getting checked out is necessary so is front-loading your health.