Good is a general term of positive evaluation, used in many different contexts:

‘Good’ can be contrasted with bad and with other terms of negative evaluation. The word is also associated with the concept of morality, and in particular teleological ethics.

The concept of good is central to philosophy, and has been the focus of extensive discussion since antiquity. In general, it has been conceived as that which lifts humans above the animal kingdom, and is therefore more than pleasure or pain, wealth or poverty, health or illness, virtue or vice. Aristotle, for example, developed an idea of the good life that focused on the development of reason in order to excel at what makes humans distinctly human.

Modern ethical theories often use the term good to refer to a general principle that guides an individual’s choices and actions. Such ideas include utilitarianism, deontological ethics, and ethical naturalism. Aristotle’s idea of the good life was influenced by both utilitarianism and hedonism. His emphasis on the development of the rational faculty was a precursor to utilitarian thinking.

For most of history, the notion of good has been linked to a sense of merit. The term is also used in a more neutral manner to express positive evaluation: ‘That’s all to the good,’ meaning that something is advantageous or desirable. Using the term in this way is common even in contemporary usage: ‘She did well on the test,’ or ‘He sees good with his new glasses.’

A variant of this notion of good is sometimes associated with virtue, particularly virtuous habits: ‘She has very good eating and sleeping habits.’ The term is also frequently used as an adjective after the verb feel: ‘He feels good after his operation.’ An old notion that it is improper to say “I feel good” in reference to one’s health still occasionally appears in print, perhaps reflecting a combination of an idea that good should be reserved to describe virtue and uncertainty about whether an adverb or an adjective should follow feel: Today, nearly everyone agrees that both good and well can predicate adjectives.

Other uses of the word good are related to concepts such as value and valuation. The idea of goods is also an important consideration in economics, especially for the purpose of establishing prices and regulating market behavior. In the context of a company, ‘good’ can also mean the quality of a product or service: ‘The service was good.’ In addition, ‘goods’ can be a synonym for raw materials, finished products, or services. For example, a person who works in the field of agriculture may be described as a goods trader. Similarly, an automobile manufacturer may produce vehicles as a goods business. Agricultural goods may be produced as commodities and sold in markets to other businesses, or they can be customized for specific purposes. For instance, a farmer may add crumb softeners to his or her wheat to make the crop more valuable to the buyer.

A bicycle is a two-wheeled vehicle with a frame, handlebars for steering and control, pedals for forward movement and brakes. It is used by millions of people around the world for transportation, fitness, exercise, racing and recreation. Riding a bike might seem easy to some, but it is actually an intricate process that involves the rider and the bicycle working together. There are many different types of bikes available to suit individual needs, from beginner-friendly tricycles and training wheels to high-performance race machines and everything in between.

A specialized bicycle designed for the purpose of competing in professional road, track or mountain bike races is known as a racing bicycle. These are often made from lightweight materials and have components like handlebars, seat post and cranks designed for maximum efficiency. Depending on the competition, there may be additional accessories such as a hydration system or electronic drivetrain.

Cycling provides a good cardio workout while improving endurance, strength and flexibility. It can also help reduce body fat and improve bone health. In addition to its physical benefits, it can be a time-efficient mode of transport as it can replace the need for driving a car or taking public transportation.

Health risks associated with cycling generally fall into three categories: traumatic (external) injuries; overuse injuries; and injuries or disorders caused by environmental exposure. The most common type of injury occurs when a person is struck by a moving or stationary object while riding a bike. Most of these accidents result in damage to the cyclist’s arms and legs, but head and neck injuries are also common.

Overuse injuries typically affect competitive cyclists or those who ride for several hours a day as part of their work. They can include wrist pain from gripping the handlebars; back, shoulder and neck pain from improper posture; knee pain from repetitive flexing of the joints; and saddle sores.

An increasing number of people are turning to cycling as a way to get around town and to work. Besides providing an opportunity to enjoy the outdoors, it can be a great form of exercise and a fun way to socialize with friends. However, it is important to understand the basic safety rules of riding a bicycle before beginning your journey on the road.

Frame size is one of the most important factors when choosing a bicycle. Compared to the wheels, which stay the same size on most bikes, frames come in various sizes and shapes. A frame that is too small can cause toe overlap, which happens when the rider’s foot rubs against the front wheel as he or she turns the bars.

Most bicycles use a steel alloy frame for its high strength and low weight, although higher-end models are often made from carbon fiber. Welding techniques have improved since the early days of bicycles, and aluminum alloys are now used in place of steel in many mid-range and high-end frames. There are even bicycles with titanium frames, which are lighter and stronger than steel but still stiff enough for race-level performance.