I'm not a experienced runner at all. I stopped doing jitz 4 years ago or so and after that I've been mostly been hitting the weights quite heavy. Maybe 2 years ago I started hitting the treadmill for 20 min rather casually at least once per week, I've been keep doing that for most of the time but the lifting has been the main thing. I did some 4 minutes tabata here and there. This summer I started running outside maybe 5k once a week as well. That resulted in a runner's knee which is a bit weird because it was running rather slow. Because of this and another injury I haven't done much this fall but last week I decided to see if my knee was okay so I went out for a run; it didn't bother me too much. This Saturday I decided to see if I could run for 40 mins on the treadmill (I thank I was inspired by that Goggins dude on JRE). No problem easy. So today I decided to run another 5K but at 5K I decided to run another 2K and then decided to keep running until I hit 10K. And then I realized I wasn't tired and didn't have high heart rate at all during my run. No pain in the legs, no pain in the lungs and I was perfectly fine. Just an easy smooth run. The thing is that I have pretty severe limiting self belief that I'm a weak bitch not only relating to running but in general. I really didn't think I could do 10K. My time wasn't anything special, I ran at 47 minutes but I seriously think I could press down that with several minutes.. I don't know what I want to tell you otherwise that I'm happy for myself.