A bicycle is a vehicle that you ride by sitting on it and pushing two pedals with your feet. It has a steering handle and brakes to control it. A bicycle has wheels that are connected in a straight line and it also has a chain to keep the wheels aligned. It is a good way to exercise because it can help you build strength and stamina.

A person can use a bicycle to get around town and it is great for the environment because it does not pollute the air like a car does. Cycling is a great way to stay healthy because it does not take much physical skill to learn how and can be done at any age or level of fitness. It is also a fun activity to do with friends or family.

People can use a bicycle to commute to work or school. It can help save time and money. It is a good workout for the heart, blood vessels and lungs. It can be done at a low intensity to start with and then built up to a demanding physical workout. It can improve mental health because it is a social activity that can be done with friends or family. It can also improve your general health because it reduces your risk of cardiovascular disease and diabetes.

Most of the parts on a bike are simple, which is part of what makes it such a fascinating mechanical work of art. The wheels, for example, are made from a hub, spokes and a metal rim. They are taller than most car wheels, which helps them to accumulate speed when the wheel is rotated. The spokes keep the wheels from becoming too heavy and they also reduce friction.

Many bicycle accidents cause serious injuries or even death. Many of these are caused by the bicyclist’s own behavior, such as not wearing a helmet or riding into traffic that is coming from behind. Other causes include swerving to avoid an object or turning the wrong way in traffic. Bicycles can also crash into trees, buildings or other vehicles.

A bicycle is a very efficient way to travel because it can get you places faster than walking and is usually cheaper than driving a motor vehicle. It can also help you maintain a healthy weight because it is an excellent form of exercise that burns calories. It can help you develop your leg muscles and lower body strength and endurance. It can also increase your aerobic capacity and reduce your chances of heart disease, diabetes and high blood pressure. It can also boost your self-esteem and mood. It can also improve your social life because you can meet new friends while cycling. You can also enjoy the scenery as you travel and visit interesting places. It is a safe, cheap and fun way to get around. The most important thing is to wear a helmet and obey all traffic laws when you are on a bicycle.