While you're waiting to watch Team GB win another medal, amaze your friends with these amazing Olympic facts..

In the ancient Olympics trainers had to attend completely naked. Obviously a rather strange rule. Apparently it was to stop women trying to covertly enter the competitions. They were only allowed to be spectators in those days.

Have you been watching Ben Ainslie in the sailing and wondering what shape the course is? Well, sailing is the only event that has a triangular racecourse.

We all know that boxing is a tough sport, but in the old days it was really brutal. There were no rounds when it was introduced in the 23rd ancient Olympiad in 776BC - the fighters just went at it until one of them was knocked out, or conceded defeat.

Animal welfare was of no concern during the ancient Games - tethered doves were used as targets by the archers.

We tend to think that the carrying of the Olympic torch to the stadium is a tradition stretching back hundreds of years, but the spectacle first took place in Germany in 1936.

The 1936 Olympics was also the first time the event had been televised.

The oldest ever Olympic medal winner is the Swede Oscar Swahn, who won silver in a shooting event in 1920.

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The world's youngest ever Olympic medal winner, meanwhile, is Dimitrios Loundras, a 10-year-old Greek gymnast who won bronze in 1896.

The colours of the Olympic rings are not random. They are blue, red, yellow, black and green because at least one of them appears on the flag of every nation in the world.

Gold medals are actually mostly silver. They have been silver with gold plating for the past 100 years.

Sources: The Ultimate Book Of Useless Information by Noel Botham, published by John Blake, and thefw.com.

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  • Katherine Copeland and Sophie Hosking of Great Britain celebrate with their gold medals during the medal ceremony for the Lightweight Women's Double Sculls Final on Day 8 of the London 2012 Olympic Games at Eton Dorney on August 4, 2012 in Windsor, England. (Photo credit: Harry How/Getty Images)

  • Alex Gregory, Pete Reed, Tom James and Andrew Triggs Hodge of Great Britain celebrate after winning gold in the Men's Four Final on Day 8 of the London 2012 Olympic Games at Eton Dorney on August 4, 2012 in Windsor, England. (Photo credit: Phil Walter/Getty Images)

  • Pete Reed, Andrew Triggs Hodge, Alex Gregory and Tom James of Great Britain celebrate with their gold medals during the medal ceremony for the Men's Four Final on Day 8 of the London 2012 Olympic Games at Eton Dorney on August 4, 2012 in Windsor, England. (Photo credit: Harry How/Getty Images)

  • Great Britain's Andrew Triggs Hodge (C) celebrates after winning the gold medal in the men's four final A of the rowing event during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 4, 2012. (Photo credit: DAMIEN MEYER/AFP/GettyImages)

  • Great Britain's Katherine Copeland, left, and Sophie Hosking celebrate after winning the gold medal for the lightweight women's rowing double sculls in Eton Dorney, near Windsor, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Chris Carlson)

  • Great Britain's Katherine Copeland, left, and Sophie Hosking celebrate after winning the gold medal for the lightweight women's rowing double sculls in Eton Dorney, near Windsor, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (Photo credit: AP Photo/Chris Carlson)

  • South Africa's Oscar Pistorius in the Men's 400m Heats during day eight of the London Olympic Games at the Olympic Stadium,, London.

  • South Africa's Oscar Pistorius in the Men's 400m Heats during day eight of the London Olympic Games at the Olympic Stadium, London.

  • Xue Chen, right, and XI Zhang, left, from China celebrate after defeating Russia in their Beach Volleyball match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (Photo credit: AP Photo/Petr David Josek)

  • Ekaterina Khomyakova from Russia reaches for a ball during the Beach Volleyball match against China at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (Photo credit: AP Photo/Petr David Josek)

  • A British fan watches activity at the rowing venue in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (Photo credit: AP Photo/Chris Carlson)

  • Russia's Yelena Isinbayeva practices ahead of the women's pole vault qualification during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (Photo credit: AP Photo/David J. Phillip )

  • South Africa's Oscar Pistorius prepares to compete in a men's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (Photo credit: AP Photo/David J. Phillip)

  • Kay Matysik of Germany digs out a ball during a beach volleyball match against Brazil at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (Photo credit: AP Photo/Dave Martin)

  • New Zealand's Nicky Samuels dives into the water for the start of the triathlon at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (Photo credit: AP Photo/Jae C. Hong)

  • Athletes compete in the swimming stage of the Women's Triathlon on Day 8 of the London 2012 Olympic Games in Hyde Park on August 4, 2012 in London, England. (Photo credit: Oli Scarff/Getty Images)

  • Boon Heong Tan and Kien Keat Koo of Malaysia compete against Yun Cai and Haifeng Fu of China in their Men's Doubles Badminton Semi Final match on Day 8 of the London 2012 Olympic Games at Wembley Arena on August 4, 2012 in London, England. (Photo credit: Richard Heathcote/Getty Images)

  • China's Cai Yun (bottom) and Fu Haifeng (top) play a shot during the semi-final men's doubles badminton match against Malaysia's Koo Kien Keat and Tan Boon Heong of Malaysia at the London 2012 Olympic Games in London on August 4, 2012. (Photo credit: ADEK BERRY/AFP/GettyImages)

  • Britain's rightback Steven Larsson (L) vies with Tunisia's pivot Issam Tej during the men's preliminary Group A handball match Tunisia vs Great Britain for the London 2012 Olympics Games on August 4, 2012 at the Copper Box hall in London. (Photo credit: JAVIER SORIANO/AFP/GettyImages)

  • Britain's pivot Robin Garnham (R) jumps to shoot during the men's preliminary Group A handball match Tunisia vs Great Britain for the London 2012 Olympics Games on August 4, 2012 at the Copper Box hall in London. (Photo credit: JAVIER SORIANO/AFP/GettyImages)

  • China's Cai Yun (top) and Fu Haifeng (bottom) celebrate their victory during the semi-final men's doubles badminton match against Malaysia's Koo Kien Keat and Tan Boon Heong of Malaysia at the London 2012 Olympic Games in London on August 4, 2012. (Photo credit: ADEK BERRY/AFP/GettyImages)

  • Athletes compete in the swimming stage of the Women's Triathlon on Day 8 of the London 2012 Olympic Games in Hyde Park on August 4, 2012 in London, England. (Photo credit: Oli Scarff/Getty Images)

  • Racha Soula of Tunisia competes in the Women's Single Sculls finals on Day 8 of the London 2012 Olympic Games at Eton Dorney on August 4, 2012 in Windsor, England. (Photo credit: Phil Walter/Getty Images)

  • Shwe Zin Latt of Myanmar competes in the Women's Single Sculls finals on Day 8 of the London 2012 Olympic Games at Eton Dorney on August 4, 2012 in Windsor, England. (Photo credit: Phil Walter/Getty Images)

  • Britain's suppporters cheer before the athletics event held at the Olympic Stadium during the London 2012 Olympic Games on August 4, 2012 in London. (Photo credit: FRANCK FIFE/AFP/GettyImages)

  • Great Britain's Jason Kenny in the sprint qualifying at the Velodrome in the Olympic Park, London.