MS150 was good fun, but I'm hanging up the bike for a few months to gain some weight back. My cardio will now only be sprint intervals 1x-2x/week.
Today I did some barefoot sprints. There's nothing like running without shoes.. didn't even put the Vibrams on. Barefoot all the way.
100 meter sprint, 5 push-up burpees, repeat. 30 seconds rest. Repeat. 1 minute rest after 3 sets.
Do this for 15-20 minutes or until you start seeing spots on the horizon. Killer. Dodger usually keeps up with me chasing after me when I sprint but he couldn't hang today... chump.