When spring has arrived, we have much more energy for everyday tasks. We’re doing renovations in our houses, rearranging the garden, sometimes even going for a longer weekend trip to the mountain. But the most people start to exercising. They are going to the swimming pool, practicing Pilates, having nice fun on the mini golf. If you do not have to many time for any stuff like that, but you still want to stay in shape, you should begin to use a bicycle. But not normal one – you have to design your own bike!