To elaborate; I literally cannot focus on a workout, particularly a cardio routine, for longer than 5 minutes or so. If the best possible wourkout for me were to do 20 minutes of rowing, running, or cycling, I will literally want to kill myself after five minutes. Typically it won't come to that, so I'll just half ass it, call it quits and take the walk of shame home, bothered, unmoisturized, unhappy, out of my lane, unfocused, languishing. This is not due to over-exertion or the overall difficulty of the exercise but I guess some kind of latent inability to focus on any task for longer than the bare minimum.
I guess the simple answer is "Just mix it up, doofus", but when I do that I end up just half-assing even more. What is to be done?
I play video games on an exercise bike. It's when I play video games, for the most part.
Open world map icon goblin games are good. I used to play an MMO which was great. Pick something with a lot of plot and dialogue or something with almost none and use podcasts.
I got Ring Fit, it's pretty good at putting that "haha number go up" RPG dopamine bullshit put to good use.
There's also stuff like target shooting during the cardio running bits, and matching an exercise's color to do more damage to enemies. Just enough gamey stuff to be engaging.