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Swimming is a popular activity and competitive sport where certain techniques are deployed to move through water. It offers numerous health benefits, such as strengthened cardiovascular health, muscle strength, and increased flexibility. It is suitable for people of all ages and fitness levels.
The kiwi is a family of nocturnal birds endemic to New Zealand.. While it is difficult to say which came first, nocturnality or diurnality, a hypothesis in evolutionary biology, the nocturnal bottleneck theory, postulates that in the Mesozoic, many ancestors of modern-day mammals evolved nocturnal characteristics in order to avoid contact with the numerous diurnal predators. [3]
A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
Swim instructors presume that their students want to learn at least one major stroke, probably “freestyle” or what used to be called the front crawl. Even people teaching swimming have been ...
Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic sports, [1] with varied distance events in butterfly, backstroke, breaststroke, freestyle, and individual ...
Black People Will Swim, based in Queens, N.Y., teaches hundreds of New Yorkers of color, with limited pool access, how to swim each year.
In public baths, there is a distinction between public baths with natural hot springs (called onsen, meaning 'hot'), and those without natural hot springs (known as sento). Since Japan is located in a volcanically active region, there are many hot springs, of which about 2,000 are swimming pools.