Thought experiment, not completely serious but something worth considering.
This would be 5 h per week, or 250 h per year, or over 10 years, 3.5 months of continuous 24/7 exercise. This is a large amount of training. 4% of your waking time would be spent on exercising. Or 6% of free time. At what point does it turn net negative, ie as time that it eats away from life. You can't attend events or hang out with family since you're always at the gym. I have understood smoking reduces your life span 8%. On the other hand, if you replace watching reels with gym, maybe it's also positive time otherwise.
The logic of exchanging 3.5 months every 10 years to be as healthy and able as possible for as long as you are alive seems to me to be absurdly compelling. Who wouldn't take that deal?
You will feel better and be in hospital at the end of your life for a lot less time on average so yes it’s a lot but potentially the chances of being a fit 80 year old could be worth it.