does competition spu them to push harder? >> it is an opt in program to be on the leaderboard. if you are competitionon advers, it is something you do not have to participate in. what i think peoplple will find helpful is, everybody has a profile. everybody fills out information related to their gender, age, and weight. that goes wirelessly to our network, and they get a personalalized readout with metricand data after every class. even if you do not want to compete against your neighbor, you e still able to track, measure, and improve your performae over time. >> do you find the people who want to be tracked, the competition pushes them to do better? >> i do. i sat in on classes last night, and ththere are several sgs with a sprirint clock. secondnd segment -- a0 segment, you have one girl say, i won that one. beat your personal best, even if it is for her to push yourself harder next time. or maybe the neighbor wants to beat it next time. whatever encourageyou to push further. >> were there challenges that surprised you going into it? >> i think it surprised all of us, some o