Also, a physical sport. You will never have the time, interest, and enthusiasm that a kid has to get good at a sport again. I grew up surfing and am proficient

Also, a physical sport. You will never have the time, interest, and enthusiasm that a kid has to get good at a sport again. I grew up surfing and am proficient at it. This makes it fun. Which means I do it regularly. It’s a great fitness activity and much more fun than my gym workouts. I’ve seen countless adults try to pick up surfing and 99% never become proficient. It took several years as a kid before I gained anything near proficiency. I’d be one of those 99% if I tried to pick it up as an adult. I got lucky I guess to have been introduced to it as a kid. That would be my advice.