Lose weight, get fit, and tone up now It seems like every day that we turn on the television or open a newspaper or flyer, we are being sold a new fitness scheme. "Just do this one exercise" or "Just eat this one food" is often the strategy being advertised. These are particularly evident in time for New Year's resolutions. By now, we all know those don't work, but we're also left wondering what does work? How can we achieve a new level of fitness-no...