For serious biking, getting a good bike trainer is key. And if you are thinking of that decrepit stationary bike you used to see in garage sales, think again. Bike trainers, also known as cycling trainers, have undergone massive renovations over the years, and are now state of the art training machines that are used by professionals and amateurs alike. There are a number of different types of bike trainers on the market, including fluid bike trainers, magnetic biking trainers, and wind bicycle trainers. For the serious biker, the fluid trainers top the lists.