Unsure how relevant this is to your situation since I primarily lift weights but I find the best way to get myself to the gym is to have small rituals that you

Unsure how relevant this is to your situation since I primarily lift weights but I find the best way to get myself to the gym is to have small rituals that you do on autopilot as part of a larger routine. For instance, I have headphones which I only wear at the gym - for me, the act of putting the headphones on seems to signify to my brain "hey, we're engaging the 'go to the gym' routine now" and everything else just sort of happens. It could be something else comparatively simple like putting on your workout shoes or filling up a water bottle that you take with you. Also, for me at least, one of the things that helps overcome the boredom is goals/metrics, which is pretty easy with weightlifting - it's "did I lift more than last time or not?". Personally, I find the stationary bike boring, so you might want to look for something else that you enjoy.