(Exercise) also means you're far more likely to enjoy an active retirement if nothing else. Spending your seventies stuck on the sofa because you can't manage a flight of stairs without struggling is no fun for anyone
Totally this. I'm 70 years old and superficial. I exercise - HIIT/cardio and weight training with 8-15 kg dumbbells at least 6 times a week. I can ski 5-6 hours without a break, walk for hours, bike uphill, et cetera. I see others my age and younger vegetate and barely able to walk to the nearest corner shop. They suffer from arthritis, high blood pressure, heart problems, diabetes...
There is no guarantee that I'll live longer. Cancer can strike anyone at any age. But while I'm here I stay active, I don't have the aches and pains that often come with old age, and I don't actually feel 'elderly'.
I get it that working parents with young children may find daily exercise difficult, but for most there will be opportunities to be active at the weekend - like the parents walking around the football field while their kids play. Or going on hikes as a family. And once they are older there should be a window most days for some exercise. There are many short workouts on YouTube, including 10 minute tabata sessions and 3-minute planks.
Keep fit, eat healthy and watch your weight........ your future self will thank you! 💪