5:2 fast, week 2

On the 5:2 fasting test, I have just discovered that (look for 'what is it and how does it work?' near the bottom) the two fasting days must not be consecutive and it doesn't matter which they are.
Well I got that wrong, but here on the second day's fast of the second week, I have lost 6lb. In the intervening days I have eaten regular large portions and exceeded the government's alcohol recommendations at least three times.

Of course the Bench 336 ride probably helps, but it wasn't having any effect before the fasting