I thought it had more to do with relativity -- The slower the mind & body gets, the faster the world seems to go. Anybody over 50 who thinks they're still as sharp & quick as they were when they were young, is fooling themselves. No matter how fit, quick, & smart you are by 50, not as much as 20 years ago.
I would regularly take real IQ tests at least once a year. In my early 50s, the scores I was getting dropped a few points. I used to be quite hyperactive & time seem to take forever. After the flu brought on a heart attack & ruined my lungs, I slowed down a lot. IQ dropped even more significantly too. Still above average, but not remarkable anymore. It was right after that I noticed time suddenly flies by too.
At 50, I could run, jump, climb, swim, & bicycle faster & better than most people half my age. Suddenly I'm in worse shape than most my age.
BTW, I'm "freeloading" to eat rhe cheapest junk, pay the cheapest rent for a crap place in a bad area surrounded by hoodlums, criminals, & addicts, while I pay for 3 hybrid cloud, safe, & secure servers at $115 EACH per month! I work round the clock every day just to keep it all running, secure, safe, & keep the nasty buggers out (even unfriendly corporations, organizations, & governments). I do get stuff in to fix or rebuild, & still make stuff to sell, but it's not nearly enough. Some days I have a hard time just walking to the bathroom or making those cheap meals. I try very hard to do whatever I can, when I can.
The kitties, are spoiled rotten. They get better heath care, & better food than I get. We live in a system where if you're poor, have or adopt a pet, it's easier to get free or cheap professional excellent heath care for them than it is for people. Their food is not much of an expense & worth it. The entertainment value, cuddling, & adventure is cheaper than cable TV, going out, or spending money on frivolous things for fun. If I'm down, sick, or tired, they're always there for support, cuddles, & comfort. Even when we run out of kitty food, I gladly give up a portion of my own food to give them, as long as it's safe & healthy for them.
I still eat Ramen at $2 for a 12-pack, or rice & beans almost every day for every meal since 2012. On a good month, oatmeal with sugar for breakfast -- the milk comes powdered in bulk cheap.
Priorities are coffee. Nothing treats my COPD & breathing better than coffee. I tried raw caffiene. Although it helped, not as good as coffee, so there's something more than just the caffeine working in coffee. After a few years with COPD, I noticed turkey & grapefruit also helps my breathing. But due to other expenses to survive, & keep working, they became too expesive on a tight budget. It's been almost a year since I had anything with turkey in it, & much longer since I had anything with grapefruit in it.