Tabata sprints (omg rydra_wong these are insane)

I knooooow. I wanna do some more (as soon as the weather stops being stupidly hot).

Btw, you may have already solved this problem, but I discovered that to help with timing yourself, there are various free Tabata mp3s floating around on the intrawebs.

I've got one that alternates 20 seconds music (frenetic techno), 10 seconds silence, etc., until you are dead finished.