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Excercise

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Gym

Many prefer doing exercises in gyms.

Aerobics at middle age delays aging

A new study has found that staying aerobically fit, especially through middle age and beyond, can delay biological aging by up to 12 years and prolong independence during old age. Aerobic exercise, such as jogging, swimming, cycling or walking - improves a person's oxygen consumption and boosts their metabolism. But maximal aerobic power starts to fall steadily from middle age, decreasing by around 5 ml/ [kg.min] every decade. When it falls below around 18 ml in men and 15 ml in women, it becomes difficult to do very much at all without severe fatigue. In a typical sedentary man, the maximal aerobic power will have fallen to around 25 mil/ [kg.min] by the age of 60, almost half of what it was at the age of 20. But the evidence shows that regular aerobic exercise can slow or reverse the inexorable decline, even in later life. Research by scientists at the University of Toronto in Canada has shown that high-intensity exercise, taken regularly for more than a year, can boost maximal aerobic power by 25 percent, equivalent to a gain of 6 ml/ [kg.min], or 10 to 12 biological years. "There seems good evidence that the conservation of maximal oxygen intake increases the likelihood that the healthy elderly person will retain functional independence," an author said. The other positive spin-offs of aerobic exercise are reduced risks of serious disease, faster recovery after injury or illness, and reduced risks of falls because of the maintenance of muscle power, balance, and coordination.

aerobics

This article is about the type of exercise. For the exercise physiology topic, see Aerobic exercise. Aerobics is a form of physical exercise that combines rhythmic aerobic exercise with stretching and strength training routines with the goal of improving all elements of fitness (flexibility, muscular strength, and cardio-vascular fitness). It is usually performed to music and may be practiced in a group setting led by an instructor, although it can be done solo and without musical accompaniment. With the goal of preventing illness and promoting physical fitness, practitioners perform various routines comprising a number of different dance-like exercises. Formal aerobics classes are divided into different levels of intensity and complexity. Aerobics classes may allow participants to select their level of participation according to their fitness level. Many gyms offer a wide variety of aerobic classes for participants to take. Each class is designed for a certain level of experience and taught by a certified instructor with a specialty area related to their particular class.

Textile and Fabrics

A textile is a flexible material comprised of a network of natural or artificial fibres often referred to as thread or yarn. Yarn is produced by spinning raw wool fibres, linen, cotton, or other material on a spinning wheel to produce long strands known as yarn. Textiles are formed by weaving, knitting, crocheting, knotting, or pressing fibres together (felt). Textiles have an assortment of uses, the most common of which are for clothing and containers such as bags and baskets. In the household, they are used in carpeting, upholstered furnishings, window shades, towels, covering for tables, beds, and other flat surfaces, and in art. In the workplace, they are used in industrial and scientific processes such as filtering. Miscellaneous uses include flags, backpacks, tents, nets, cleaning devices, such as handkerchiefs; transportation devices such as balloons, kites, sails, and parachutes; strengthening in composite materials such as fibre glass and industrial geotextiles, and smaller cloths are used in washing by "soaping up" the cloth and washing with it rather than using just soap. Textiles used for industrial purposes, and chosen for characteristics other than their appearance, are commonly referred to as technical textiles. Technical textiles include textile structures for automotive applications, medical textiles (e.g. implants), geotextiles (reinforcement of embankments), agrotextiles (textiles for crop protection), protective clothing (e.g. against heat and radiation for fire fighter clothing, against molten metals for welders, stab protection, and bullet proof vests. In all these applications stringent performance requirements must be met. Woven of threads coated with zinc oxide nanowires, laboratory fabric has been shown capable of "self-powering nanosystems" using vibrations created by everyday actions like wind or body movements.

Gym

(gymnasion) was used in Ancient Greece, meaning a locality for both physical and intellectual education of young men (see gymnasium (ancient Greece)). The later meaning of intellectual education persisted in German and other languages to denote a certain type of school providing secondary education, the Gymnasium, whereas in English the meaning of physical education was pertained in the word gym. The Greek word gymnasium means "place to be naked" and was used in ancient Greece to designate a locality for the education of young men, including physical education (gymnastics, i.e. exercise) which was customarily performed naked, as well as bathing, and studies. For the Greeks, physical education was considered as important as cognitive learning. Most Greek gymnasia had libraries that could be utilized after relaxing in the baths.