I really thought I could not do this. I was fine with Run 1 but 8 mins suddenly seemed a bit long. I warmed up a bit, started and was flying through the first 8 mins to be honest (despite having to dodge Arsenal football fans marching off to the pubs, who were clogging up the pavement) until I remembered to slow down a bit. The second one I kept a more modest pace and at the end did an extra minute or so just to work up a sweat. It really helps that it is cool and windy today as I heat up very quickly normally. Still don't think I can do 20 mins in one go next time but I'll try it and see. I think I benefit from being a regular walker and my walking is speeding up since the programme fitness kicked in. So I am rather pleased with Week 5 so far even though I have the wobbles about the last run. Any tips do let me know. One thing that helps me is allowing myself to think - well I'll fast walk if it gets too much - as it takes off the pressure a bit. This is really helping me to cope with current family illness at the moment as all that can make you feel so helpless to help.