Hi mate. I was previously doing some circuit training a few years ago. Twice per week which always started with a timed warm up run. 2 miles, then I would do a park 5k run every other Saturday. 5k was always the furthest I've ran, but was always striving to beat my best time. The best I managed was 21mins 20 seconds. I've been running again for 1 week tomorrow. Last night I did my 3rd proper run. I have been reading up on lots of different aspects, on Sunday a decided to concentrate on my posture a bit more, I've always ran and been watching my feet causing me to run in an incorrect posture ( so I've recently read). So Sunday afternoon i did 5k, and after 4k I was really struggling but I completed it without stopping or walking. Yesterday evening, I decided on a different route, again concentrating on keeping my back straight, and head up. I set off at a steadier pace. I was feeling good after 4k. Relaxed, my breathing was controlled so I thought I'd see if I could do 6k. I kept telling myself I could do it, then my watch buzzed at 6k, my an was to walk back to the car after 6k, but I decided to continue on the final lap. I completed the final lap, checked my watch and id ran 8.65k. I've rested today, I'm a little stiff not bad though. My an is to do 5k tomorrow and 5k on Saturday, but try to run faster than last weeks 5k. Then I will try the longer run again next Monday. Any advice would be great. Thanks pal