for the first time in my life I've deliberately and successfully lost weight (2.1 kilos in 2 weeks! ). There's no doubt that my daily 20 minute bike rides have helped me burn of a sizable chunk of that. I know 2 killos isn't much to crow about and i have a lot more to go (currently 135.6kg) but I'm so surprised and pleased that two weeks of sacrifices (no chocolate!) can make a difference