Am doing my first park run in the morning to see where I am at. I have just done W5R3 and start week 6 on Monday. My problem is the mental challenge. I have had some knee twinges which have stopped but apart from that nothing hurts when I run at all. I am fit so don't get out of breath much but the urge to stop is strong. Am hoping to run for 20 mins walk for 10 and then run to the end on the park run tomorrow but does anybody have any tips for helping with the mental side of things.