Lovely sunny, warm spring weather got me out for a run rather than the weights session I had intended. 1st time this year in t-shirt without a fleece. I did my hilly pyramid interval run, and took the precaution of drinking a bouillon "tea" beforehand, after having visual migraines the last time I ran hard.
Maybe that was the difference ... I was amazed and delighted to arrive home and find I had run at an average 9m 51s per mile for 3.2 miles, 7s per mile better than my best last August! It put a smile on my face for the rest of the day I had more bouillon later in the day, and no migraines Might be coincidence, but I'll do it again next running day!