This morning I decided to do some interval training. I wasn't sure what but just something.
Once I was out of the door I changed my mind and thought I'd try and beat my 5k time! I ran the first 2k with a pace of 4:50 which is way faster than the 5:10 I started out with last time. I simply couldn't keep running at that speed and had to stop and walk.
After walking around 400 metres, I then ran the next 1k with a pace of 4:40. It was so hard that I decided to do some of the good old 10-20-30 interval training to get home but instead of running the 30 seconds very slow I walked them. Then I ran the 20 seconds with a pace of around 5:30 and then sprinted the last 10 seconds. I did this pattern for around 2k and was very nearly dead by the time I got home!
I suppose if I keep doing something like this every week I'll get used to it in the end and will be faster for Berlin but it's SO hard right now!