Notes
20 min. warmup
5 min. hard / 5 min. recovery
4 min. hard / 4 min. recovery
3 min. hard / 3 min. recovery
2 min. hard / 2 min. recovery
1 min. hard / 1 min. recovery
45 sec. hard / 45 sec. recovery
30 sec. hard / 30 sec. recovery
20 sec. hard / 20 sec. recovery
10 sec. hard / 10 sec. recovery
~6 min. cooldown
All intervals less than 1 min. were geared-up, all-out sprints. Sweated nearly 100% of my shirt. Should sleep well tonight.