In many sports leagues around the world, promotion and relegation is a process that takes place at the end of each season. Through it, teams are transferred between two divisions based on their performance that season. The best-ranked teams in the lower division are promoted to the division above, and at the same time, the worst-ranked teams in the higher division are relegated to the division below (in some countries play-offs are also used). This process can continue through several levels, with teams being exchanged between levels 1 and 2, levels 2 and 3, levels 3 and 4, and so on. Sometimes, qualifying rounds are used to promote and relegate.

The number of teams exchanged between the divisions is normally identical. Exceptions occur when the higher division wishes to change the size of its membership, or has lost one or more of its clubs (to financial insolvency, for example) and wishes to restore its previous membership size, in which case fewer teams may be relegated from that division, or more accepted for promotion from the division below. Such variations will almost inevitably cause a "knock-on" effect through the lower divisions. For example, in 1995 the Premier League voted to reduce its numbers by two and achieved the desired change by relegating four teams instead of the usual three, whilst allowing only two promotions from Football League Division One.

Eddie Bravo (born Edgar Cano on May 15, 1970) is a Mexican-American practitioner of Brazilian Jiu-Jitsu who holds a second degree black belt under Jean-Jacques Machado. He is most famous for his win as a brown belt against Royler Gracie by triangle choke in the 2003 Abu Dhabi Submission Wrestling championships and his particular style of no-gi Brazilian Jiu-Jitsu, called 10th Planet Jiu-Jitsu. He is also known for his mixed martial arts commentating on the Ultimate Fighting Championship and music composition. In an interview he advocated marijuana as performance enhancing. He lives in Hollywood, California, where he ran his 10th Planet Jiu-Jitsu school out of Legends MMA until 5/11/12. Is presently teaching at 10th Planet in Burbank, Ca.

Eddie Bravo has released several Instructional Manuals:

Mitsuyo Maeda → Carlos Gracie, Sr. → Carlos Gracie, Jr. → Jean Jacques Machado → Eddie Bravo

At UFC Fight Night 24, Chan Sung Jung, aka "the Korean Zombie" forced Leonard Garcia to tap to a spine lock called "the twister", the lock is also known in amateur wrestling as a "guillotine", not to be confused with the guillotine choke which is used widely in MMA. It was the first time the submission had been used to finish a fight in UFC history. He talked about the move after the fight, "It's something I saw a long time ago on the Internet on video," Jung said. "It's one of Eddie Bravo's moves. It's something I practiced because it looks fun and I do it quite a bit in practice. I have always told people I was going to try it sometime in competition. I wanted to do it in the UFC and I was able to, finally."

Jean Jacques Machado is one of the five Machado brothers, including Carlos, Roger, Rigan and John, renowned for their Brazilian Jiu-Jitsu (BJJ) skills. Nephews of BJJ co-founder and Master Carlos Gracie, the brothers learned the martial art from an early age.

Machado is known for his grappling skills having won ADCC Submission Wrestling World Championships in his weight division plus a runner up in the open division in 2001.

Born in Rio de Janeiro, Brazil, Machado began his Jiu-Jitsu training over twenty years ago. He dominated the competitive arena of Brazilian Jiu-Jitsu in his native country, capturing every major title and competition award from 1982 through 1992.

In 1992, Machado arrived in the United States to continue his competitive success. Dominating the Brazilian Jiu-Jitsu scene both in the US and in international competition, Machado is one of the most admired and respected Brazilian Jiu-Jitsu practitioners in the world today. Among his students are Eddie Bravo and Joe Rogan.

On June 6, 2011 in a private ceremony held at the Rickson Gracie Academy in West Los Angeles, Machado was promoted to a 7th degree red-and-black belt. This prestigious promotion is in recognition of Machado's 25 years as a black belt instructor, competitor and champion.

Jean-Jacques Rousseau (28 June 1712 – 2 July 1778) was a Genevan philosopher, writer, and composer of 18th-century Romanticism of French expression. His political philosophy influenced the French Revolution as well as the overall development of modern political, sociological and educational thought.

His novel Émile: or, On Education is a treatise on the education of the whole person for citizenship. His sentimental novel Julie, ou la nouvelle Héloïse was of importance to the development of pre-romanticism and romanticism in fiction. Rousseau's autobiographical writings — his Confessions, which initiated the modern autobiography, and his Reveries of a Solitary Walker — exemplified the late 18th-century movement known as the Age of Sensibility, featuring an increasing focus on subjectivity and introspection that has characterized the modern age. His Discourse on the Origin of Inequality and his On the Social Contract are cornerstones in modern political and social thought.

Rousseau was a successful composer of music. He wrote seven operas as well as music in other forms, and he made contributions to music as a theorist.