To put it bluntly, over-ear headphones are simply not going to be the best for fitness-related activities. While this is purely subjective, admittedly, they are much bulkier than earbuds are. And, when you are partaking in fitness-related activities, chances are your body is going to be moving (sometimes vigorously). With that said, your most convenient option is probably going to be earbuds that are both sweat-resistant and durable.