They are tired and stressed when they come home and need something easy to unwind. I am not even sure why fishing or birdwatching would be superior to watching

They are tired and stressed when they come home and need something easy to unwind. I am not even sure why fishing or birdwatching would be superior to watching a movie on TV. I've seen quite a few studies that indicate exposure to nature is beneficial in reducing stress. So is physical exercise, even non-strenuous, which you'll get more of by fishing or birdwatching than by sitting on the couch. Maybe these studies are just more non-replicable junk; I don't have time to do a deep dive to check right now. They do line up with my personal experiences and anecdotal observations of others. (Which means I should probably be extra-skeptical, since it's easiest to fool yourself when a result aligns with your prior intuitions.) But that's how I developed my list of examples, with a lot of outdoor activities and activities that will use different parts of your body.