[john___matrix]

> Stop eating carbs about 2 months before. I did this and went from a 2:06 to 1:58 with minimal training. My body carried several kg less weight and felt like it could consume its own fat energy more efficiently and I didn’t get the 2/3 slump.

You would likely get the same results and time drop just by running consistent training mileage for 2 months instead of a big diet change like this.