If you want to work out and get into shape in the comfort of your own home, there's a lot to be said for exercise bikes. These provide all the benefits of a normal bike while you can stay warm and dry inside - and maybe even enjoy your favourite TV programme while you work out.We have a huge range of second-hand exercise bikes to choose from at Pinnacle Fitness. But which type of exercise bike is right for you? Let's take a look at some of the main options.