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Marcus Greatwood (born 18 March 1973) is a British freediving coach. Although an international coach he is most noted for his inception and development of "NT Style" Freediving, based on relaxation and breathing techniques (1st published in 2008). He has coached many athletes, setting 12 National records in all of the AIDA recognised disciplines (). He has personally held several UK records in depth apnea free-diving disciplines recognized by AIDA International (). His Club Freediving (NoTanx) based in London is now the largest group of freedivers in the UK has grown exponentially since 2001 to having 7 weekly pool sessions with 80+ active members. All training is split into Yin and Yang, with an emphasis placed on Yin (soft, slow & internal). ==International Coach == Marcus was coach for Herbert Nitsch from 2006 - 2008, including his No Limits dive to 214m and 2 Constant Weight World Records. Marcus has recently coached relative newcomer and rising UK star Alan Barber to a Dynamic No Fins record of 127m () and several Dynamic Records culminating in the 2009 record of 202m. Marcus also coached Sam Still (Former world Freediving champion) () as well as a group of other athletes from the NoTanx Stable. In 2012 15 club members featured in the top 10 of their National Rankings () 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Marcus Greatwood」の詳細全文を読む スポンサード リンク
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