I am 49 and got up to week 5 of the plan, I found that my legs tired before I got out of breath, but I felt great after finishing. After week 5 the longer runs left my knees and hip clicky and painful. My shoes should be ok as I had new ones after a gait analysis. I was really proud of myself for running 5-6 mins, but now feel deflated as I was hoping running would be the miracle I need to help me lose weight (5 stone), but maybe it's not for me. How can I tell if this is normal and I will get stronger or if it is something more serious.? Has anyone else suffered and carried on through the pain?