Aerobic Threshold Session: 3x(600x1, 400x2, 200x4, on 3, 2, 1min)

Haven’t been my best since yesterday. Felt real week and tired and started getting a headache yesterday lunchtime so went home and slept most of the afternoon and last night. Awoke this morning still a little weak but decided to give the session a go. Despite a dull headache (which I still have) the session went quite well. Plan for another early night, and all being well, I should be better tomorrow. Total 14.68km