Since spring has came, we have a lot more power for each day activities. We're doing renovations in our houses, rearranging the backyard, sometimes even going for a short trip to the Paris. But the most humans begin to exercising. They're going to the gym, practicing Yoga, having nice fun on the tennis court. When you don't have to many time for any tasks like that, but you still like to get in shape, you need to begin to use a bicycle. But not normal one - so design your own bike!