Hula hoop
A hula hoop is a toy hoop that is twirled around the waist, limbs or neck. It can also be wheeled along the ground like a wheel, with careful execution. They have been used by children and adults since at least 500 BC. The modern hula hoop was inspired by Australian bamboo hoops. Common lore posits the creators of the plastic hoop popularised in the US witnessed Australian children playing with bamboo hoops while driving past in an automobile. The new plastic version was popularized in 1958 by the Wham-O toy company and became a fad.
Hula hoops for children generally measure approximately 70 centimetres (28 in) in diameter, while those for adults measure around 100 centimetres (39 in). Traditional materials for hoops include willow, rattan (a flexible and strong vine), grapevines and stiff grasses. Commercial hoops are usually made of plastic tubing.

Origins
Native American Hoop Dance is a form of storytelling dance incorporating hoops as props. These props are used to create both static and dynamic shapes, which represent various animals, symbols, and storytelling elements. The dance is generally performed by a solo dancer with multiple hoops.
Before it was known and recognized as the common colorful plastic toy (sometimes filled with water or sand), the traditional "hula hoop" was made of dried willow, rattan, grapevines, or stiff grasses. Though they have been in existence for thousands of years, it is often incorrectly believed that they were invented in the 1950s.Author Charles Panati records a "craze" with the usage of wooden and metal hoops in 14th-century England. He reports that doctors treated patients with pain, dislocated backs, and even heart failure due to hooping. Panati also says that the name "hula" came from the Hawaiian dance in the 18th century, due to the similar hip movements.

Modern history
The hula hoop gained international popularity in the late 1950s, when a plastic version was successfully marketed by California's Wham-O toy company. Cane hoops had been popular children's toys to be rolled on the ground and kept balanced for as long as possible.  In 1957, children in the Norwegian town of Steinkjer began a fad described in the English press as "rock-rings", with the description being "These are huge cane rings which little girls swing round their bodies by moving their hips and arms."  An August 7 news item described the origin as children buying cane rings after seeing ring jugglers at a circus that visited Steinkjer and added "It wasn't long before most of the children in the town had caught the 'wiggle-rock' craze.  Now it is all over Norway."  In the same summer, schoolgirls in Australia were using the hoops  and news came to the United States with the first reference to the toy as a "Hula hoop", described as "all the rage among the female small fry of Australia.  This is old fashioned hoops with a difference.  You don't roll them, you put them around your middle and by swinging the hips in a circular motion to keep the hoop revolving— hence the name.".According to "The Playmakers: Amazing Origins of Timeless Toys" by Tim Walsh, the bamboo hoop's path to plastic started in Australia when a Sydney teacher taught school students how to sway bamboo hoops in sports classes.  Australia's Coles department stores then started selling bamboo hoops and demand soon outstripped supply. Coles then asked legendary toy man Alex Tolmer (also known as Alec), who founded toy company Toltoys, to help mass produce hoops. In 1957, Tolmer used Polyethylene which was stronger and less brittle than earlier plastics.  The new lightweight plastic hoops sold in a variety of colours for less than $2.  Toltoys sold 400,000 plastic hoops in Australia in 1957 alone. According to Tolmer's Melbourne-based son, David Tolmer, Toltoys already had a good working relationship with Wham-O in the United States and when Wham-O told Toltoys the hoop was too generic to warrant a royalty, Alex Tolmer instead asked the US company to sponsor one bed in an Australian children's hospital.  By 1958, Wham-O plastic hoops were being used in California and then the craze for hooping swept the United States and beyond.
Richard Knerr and Arthur "Spud" Melin of Wham-O updated the Toltoys design and manufactured 110 cm (42 in) diameter hoops from Marlex plastic. The earliest known advertisement was seen for the "Hula-Hoop by Wham-O" was seen on June 16, 1958 for "The Broadway" chain of department stores in Los Angeles, for sale for $1.98  (equivalent to $20 more than 60 years later). With giveaways, national marketing and retailing, a fad began in July 1958: twenty-five million plastic hoops were sold in less than four months, and sales reached more than 100 million units in two years. Carlon Products Corporation was one of the first manufacturers of the hula hoop. During the 1950s, Carlon was producing more than 50,000 hula hoops per day. Saddled with a glut of unwanted Hula Hoops, Wham-O stopped manufacturing the toy until 1965, when Knerr and Melin came up with a new twist: They inserted ball bearings in the cylinder to make a "shoosh" sound. The hoop was inducted into the National Toy Hall of Fame at The Strong in Rochester, New York, in 1999.

The hula hoop craze swept the world, dying out in the 1980s except in China and Russia, where hula hooping and hoop manipulation were adopted by traditional circuses and rhythmic gymnasts. In the mid to late 1990s there was a re-emergence of hula hooping, generally referred to as either "hoopdance" or simply "hooping" to distinguish it from the children's playform. The jam band The String Cheese Incident is widely credited with fostering a renewed interest in hooping. Band members started throwing larger adult-sized hoops into their audiences in the mid-1990s, encouraging their fans to hoop and dance, spreading the word and the fun. It wasn't until 2003 with the launch of a former website, Hooping.org, that these small bands of hoopers began to find each other online and a real community and movement began to grow. Bay Area Hoopers began in San Francisco at that time holding regular "hoop jams" with music to hoop to and the hooping group began being replicated in cities around the world. In 2006 Hoopin' Annie had the idea to create a hooping holiday and the first World Hoop Day was held in 2007. Modern hula hooping is seen at numerous festivals and fairs in the USA, UK, Australia and Europe.

Hooping as an activity
Many modern hoopers make their own hoops out of PVC piping, or polypropylene tubing (known as polypro). The polyethylene hoops, and especially the polyvinyl chloride hoops, are much larger and heavier than hoops of the 1950s. The size and the weight of the hoop affect the style of the hooper. Heavier, larger hoops are used for beginning dancers and easier tricks, while lighter, thinner tubing is used for quick hand tricks.  These hoops may be covered in a fabric or plastic tape to create a visual image and distinguish between the hoop and dancer. Gaffer tape is used to line the inside of a hula hoop to add grip, or a bare hula hoop can be roughened by using sandpaper. Some use glow-in-the dark, patterned, or sparkling tape, and others are produced with clear tubing and are unfilled (child hoops are commonly filled with various materials). LED lighting has been added, allowing hoops to light up at the flick of a switch or a remote control. Programmable 'Smart Hoops' are available which provide a range of special effects and some can even be customized through an application on a mobile device.Modern hooping has created a wide range of tricks. Hooping now includes many 'on body' moves and many 'off body' moves. A few examples are breaks, isolations, leg hooping, and double hooping.
Hooping is a popular fitness activity, with classes in many cities across the world.Fire hooping has been introduced, in which spokes are set into the outside of the hoop and tipped with kevlar wicks, which are soaked in fuel and ignited.
Collapsible hula hoops have been developed for easy transport and versatility.
Weighted hula hoops which weigh between 1.5 and 8 pounds are used for exercises and the extra weight usually comes from plastic or padded steel. People use it for weight loss routines and add some easily repetitive routines (and music) to make it fun.

In popular culture
On September 6, 1958, singer Georgia Gibbs appeared on US TV's The Ed Sullivan Show to sing "The Hula Hoop Song". Her last US top-40 hit, it competed with four other songs created in the wake of the huge fad.
Hula hoops are mentioned in the 1958 Alvin and the Chipmunks song, "The Chipmunk Song (Christmas Don't Be Late)". Wayout Toys, under license to Emson, introduced the Alvin Hula Hoop Doll, which dances with his hula hoop and sings the song based on wanting his hula hoop.
Joel and Ethan Coen's 1994 comedy film The Hudsucker Proxy tells a fictional story of the hula hoop's invention by a mail room clerk (Tim Robbins) who is installed as president of a manufacturing company as part of an intended business scheme.
Hula Hoop is featured as an aerobics minigame in the Wii Fit game franchise.
During the production of Pixar Animation Studios film WALL-E, Disney.com released a clip of Wall-E's first encounter with a hula hoop, swinging it across its neck.
Artist Keller Williams released a song "Hula Hoop to the Loop", dedicated to the toy.
The final season of M*A*S*H contains an episode titled "Who Knew?", in which Sergeant Klinger observes children playing with barrel rings, and fashions a hula hoop-like toy made of metal tubing. He then tries to get Major Winchester to fund their production, but fails.
Hula Hooping Girl, a 2020 street art painting by Banksy in Nottingham, England, portrays a young girl hula-hooping with a bicycle tire.
Around 2017 Hulazumba, a mexican girl starts a new wave dancing and hooping at the same time as an effective workout.

References
Further reading
Caughey, T. K. (February 1960), "Hula-Hoop: An Example of Heteroparametric Excitation", American Journal of Physics, 28 (2): 104–109, Bibcode:1960AmJPh..28..104C, doi:10.1119/1.1935069
Seyranian, Alexander P.; Belyakov, Anton O. (July 2011), "How to twirl a hula hoop", American Journal of Physics, 79 (7): 712–715, arXiv:1101.0072, Bibcode:2011AmJPh..79..712S, doi:10.1119/1.3576177, S2CID 119152978

External links
Wham-O Hula Hoop
Largest Online Hula Hoop Community