Since spring has came, we have far more power for each day tasks. We are doing overhauls in our apartments, rearranging the garden, sometimes even going for a longer weekend trip to the mountain. But the most humans begin to exercising. They're going to the gym, practicing Pilates, having nice fun on the tennis court. If you do not have to much time for any tasks like that, but you still like to stay in shape, you should start to use a bicycle. But not normal one - you have to design your own bike!