I'm sorry to brag, but was dubious when I went out for my first run of week 4 - 2 x 5 min runs and 2 x 3 min runs in hot sunshine, someone is being very silly thinking I can do that. But I DID IT, I only went and did it. Shouted out loud to encourage myself when Laura told me I had 1 min left of the first 5 min, shouted out loud when I finished that bit. People on the tow path must think I'm a complete idiot. So for anyone worrying they won't make it you can - if I can you can.