I am 46 years old and on Monday I ran my first 10k in 1 hour and 6 mins. I only began running in October. I used the couch 2 5k to get me started and now I am addicted. I wanted to recommend the programme and encourage people to persist with it. Running is the most wonderful exercise it is everything u need mentally and physically to be healthy. My only advice is to listen to your body and stretch, stretch, stretch !!!!!!!!!!!!