Bathing is the immersion of the body in a fluid, usually water or an aqueous solution. Some spa facilities provide bathing in various other liquids such as chocolate or mud. There have been examples of bathing in champagne, baked beans and all manner of other substances.
A bath or tub is a plumbing fixture used for bathing. Most modern bathtubs are made of acrylic or fiberglass, but alternatives are available in enamel over steel or cast iron, and occasionally wood. A bathtub is usually placed in a bathroom either as a stand-alone fixture or in conjunction with a shower.
Modern bathtubs have overflow and waste drains and may have taps mounted on them. They may be built-in or free standing or sometimes sunken. Until recently, most bathtubs were roughly rectangular in shape but with the advent of acrylic thermoformed baths, more shapes are becoming available. Bathtubs are commonly white in color although many other colors can be found. The process for enamelling cast iron bathtubs was invented by the Scottish born American David Dunbar Buick. Two main styles of bathtub are common: Western-style bathtubs in which the bather lies down. These baths are typically shallow and long. Eastern style bathtubs in which the bather sits up. These are known as ofuro in Japan and are typically short and deep.
Bathing usually involves the removal of at least some clothing; normally in private baths all clothing is removed. The amount of clothing removed depends on circumstance, custom, and willingness of bathers to reveal themselves. A swimsuit, swimming costume, or bathing suit is a garment designed for swimming or bathing.