I hate exercising, but I do it religiously. I am 64 years old, and in the best shape of my life. Same weight (and weight distribution!) as in college, good muscle tone. I think three things were critical, for me: 1. Absolutely no soft drinks at all. Not with sugar, not with artificial sweeteners. Nothing. Just seltzer. I used to drink a LOT of Dr. Pepper, and was told that they were contributing to my frequent kidney…
That said, I'm still seeking the curiousity driven exercise where you're not in passive mode but playful and trying stuff for the sake of trying, it's an internal pleasure and a hygiene you know.
Happy healthy life man