Dipping into the well

Met with the Thursday track group at Piedmont High this morning. Workout was an "inverse ladder", but seemed more like climbing into a well: 1600-800-400-800-1600, increasing effort at the shorter distances with 400 m recoveries. My plan was to go 6:30-3:00-1:25-3:00-6:30, but these went down in 6:25-3:07-1:10(!!!)-3:04-6:25, and done before sunrise. Felt great, but I can still feel that 400 in my lungs. 6.5 total including warmup and cooldown.