Tired

Haven't had a lot of sleep recently because of the formal and coming into the weekend. Took its toll in training today. I was training by myself which made it harder. Did Sherman fartlek, so, 30s, 45s, 1 min, 90s, 2 min, 3 min, then repeat. 1 minute recovery in between each. Went ok up until the first 3 minutes, then I struggled on that one. Pace was somewhere between 2:57 to 4 flat km pace throughout the whole session. Felt really sore after with a bit of a calf cramp right when I stopped running. 6.53km all up.