I really struggled

Saturday, December 5, 2009--I went to Westtown School's track and wound up doing 8x300 with the goal pace for #s 1,3,4,6, and 7 :52 and the goal pace for #s 2,5, and 8 48 seconds. 2-min rest-walk of 100 meters in-between. This workout was tougher for me than it should've been. I really struggled. What does that say? My runs were 52, 48, 52, 52, 48, 53, 52, 50. I'll have to see if this compares favorably to last year's equivalent workout at this time. (Warmed up 1.35 and cooled down .85; my leg started to twitch for some reason. Total: 3.7 miles) Today I am off to Penn Oaks. Report later.