The three 5 minute runs were fine, even though I felt like I was running into daggers of ice, having gone out in the same long sleeve t-shirt of last week but it being a good 5 degrees cooler (and much windier...) The warm-down walk back was pleasant though, as I was quite hot by then, and it felt like my beetroot-hot face was being pleasantly fanned cool.
Can anyone help me with this though - I have developed a couple of blisters - wondering if anyone else has had these? They're on the inside of my arches - quite large blisters all the way along. I did feel a faint burning as I finished the last 5 minute run, but nothing too uncomfortable. However I can see how this could easily get worse with longer runs. Is this something I could resolve by getting some running socks? Or is likely to be a more fundamental problem with my shoes? (which are fine otherwise)