Crossfit Pt 2

So I have been doing the free beginners classes at Crossfit Brooklyn for three weeks now. I can't help but think it has helped with my performance in the last few weeks. The metabolic conditioning workouts are intense and short. They have a big emphasis on the power through the posterior kinetic chain. Box jumps, burpees, wall ball, tuck jumps. Good stuff for the track sprinter. I am gonna sign up for the Elements class as soon as I have the cash.