First of all, travelling by bicycle is environmentally friendly because you do not have to use petrol and a bicycle does not produce any pollution. What’s more, it’s a very good exercise which can help us stay fit and strong for many years of our life. It helps you lose weight and reduce blood pressure. In addition it’s a very cheap way of travelling. Cycling is almost free from costs. On the other hand, riding a bike in a big city can be very dangerous. Drivers don’t care about people on bikes. They sometimes even drive when they are drunk or don’t respect cyclists’…