Go for Broke with Tabata Intervals | Active.com

Go for Broke with Tabata Intervals | Active.com: "What can you possibly accomplish in just four minutes on the bike? A lot, actually. All you have to do is ride as hard as you can. Better yet, instead of riding as hard as you can for four straight minutes, ride at your true maximum power-output level in several short bursts, resting just long enough between bursts to avoid a precipitous decline in power output from one burst to the next."