I did my first intervals today - warm up, 8x1 min tempo with 1 min slow in between. Had to walk some after #4 or 5. Lactate was painful in the second 4.... but went away again with the slow jog. Now my legs are heavy. Which might also have to do with the christmas champagne consumed at the office after the run....

My treat was the offroad dash through the trees in the end.