A little while ago, I bemoaned that the Sony WH-1000M4 headphones were disappointing to me. I’m happy to report they have been working pretty well as my gym headphones. The fit is pretty good (they don’t fall off unless I’m practically upside down) and the sound plus noise cancellation are more than adequate. The creakiness I observed when they were brand new seems to have gone away. My only complaint is that, when I bring my iPad with me to watch TV shows while doing cardio, it can be a pain to get the headphones to connect to it. They seem to want to connect only to my phone.
My gym almost never plays music, which is great because everybody wears some kind of wireless headphones there. I mostly see AirPods Pro around the gym, but a few people have the AirPods Max, and I wish I did, too. Their tighter fit and punchier sound, compared to the Sony WH-1000M4, would be welcome. A handful of other people at my gym use the same headphones I do, so I don’t feel crazy for not using purpose-built workout headphones there.