exercise decisions.
Ok, so we know people are addicted to drugs, alcohol, tobacco, caffeine, porn etc. But our addictive tenancies play out in exercise too. Think about it, most people have a "thing".
People identify themselves by the kind of exercise they do.
Runner, cyclist, swimmer, jazzercise, cross-fit, body building, basketball player, golfer etc. Have you EVER met a dude who plays golf and road bikes for example? We tend to have personalities where we get "addicted" to one thing. We start to lose balance and focus on one thing AND then we thinks it's a good idea to run a marathon or do that LOTOJA thing etc.
There is diminshing returns with exercise, 30 minutes of running is great, running 20+ miles not so great for your body. Same with cycling, sitting on that tiny seat all day wrecks havoc on your man bits.
Anyways you get the point, for whatever reason we tend to obsess and get addicted with one kind of exercise and then take it to the extreme. We get way past doing it for just health and it become an addiction or an obsession.
One of the reasons I brought this up is because I was surprised at a recent thread about how few men can run a 10k under an hour and bench press 225 10 times. Neither is that hard but people hyperfocus on thing and lose balance. If you're a casual runner and not overweight you should be able to run a sub hour 10k in a few months of training.