I'm going out on a limb here and say ... 2 minute all out intervals? Scientifically, I would also allow a 2 minute rest between efforts. Reduce this to 1 minute eventually if you survive.Anyone have a favourite plan for developing 2 minute power? I have the brute power to jump them off the line, and I can out ride them over 3 hours, it's just that little bit in the middle that's a bit deficient.