It's somehow like I don't notice it until I stop to catch my breath. I have to take huge breaths and then the tears start falling down and I feel this sort of pain in my chest. I feel like it's somehow connected to my breathing..but not sure. And then when I went to the toilet I decided to just let it all out so I could relax and keep going but I couldn't. But I don't know what I am crying about because I know I'm not in any danger or anything.