Since spring has arrived, we have far more power for everyday tasks. We are doing renovations in our houses, rearranging the garden, sometimes also going for a longer weekend trip to the mountain. But the most people begin to exercising. They're going to the swimming pool, practicing Pilates, having pleasant time on the mini golf. If you don't have to much time for any tasks like that, but you still want to stay in shape, you need to begin to use a bicycle. But not normal one - so design your own bike!