Omggg one time one of my AirPods fell out when I was running on the treadmill at the gym and I had to tell the workers and they had the lift the treadmill for me to crawl under and get it ?I have the beats with the wire that connects them & it has a plastic piece that wraps around your ear. It keeps them on really well, only con is it doesn’t have the best noise canceling which isn’t as beneficial if you’re in a gym and can still hear the other treadmills and ppl working out a little bit— but then it is good for road running to hear traffic or others around you.