The Samsung Micoach is known as the Mr Motivator of mobiles, and with good reason. It's a joint venture between Samsung and Adidas, and has all the features you'd expect from the modern mobile, but the good bit is that it is a 'personal trainer mobile', that monitors your heart rate, acts as a pedometer that attaches to your laces, measuring how far you've gone and the speed you're travelling. You can set a personal workout and the phone will not only monitor your performance, it will actually tell you what to do.