I've had unpleasant things happen to me both on the treadmill and running outdoors, so here are some specifics.
First, on the treadmill.
The most unpleasant thing I've encountered running on a treadmill is the guy next to me who keeps competing with me. I run 7 speed, he had to run 7.5, I add 2 levels of incline, he added to 3 levels, how to pressure me a little, while running also glanced at the face of "you can not" expression. The most annoying thing is that I finished running, he did not run as hard as he could, reduced speed and slope, slowly walking up, really do not understand this kind of people what is the psychology.
The second most important thing is to run and drop something. I usually run with a cell phone, towel and water bottle, these things on the body in the way, put on the treadmill will often fall, once the fall, I feel the whole person is not good, there is a kind of want to pick up can not pick up, do not pick up and always worry about the feeling. If someone picks it up for me at this time, I feel like that person is an angel.
The third most important thing is to have someone talk to me when I am running. When you're running and you're having a good time, and someone talks to you, you have to decide if you want to talk to them or not. If you don't talk to him, you'll look rude, but if you do, your breath and rhythm will be messed up, and if you don't adjust well, you'll easily get out of breath, which is very difficult for you.
Next I'll talk about outdoor running.
The most annoying thing about outdoor running is that there is always something interfering with you. Either a few people in front of you are running side by side and blocking the road, so you can't overtake them, or you don't want to stop, which is very annoying; or flying objects (balls) appear out of nowhere, so it's all up to the individual to react;
The things you bring with you to run can also interfere with your running, and you don't have a place to put your keys, cell phone, or anything else; you can't bring them with you, and you don't want to lose them on the ground, which means you can't run properly.
Fellow runners, what other unpleasant things do you have to do when you run?