I was chatting with Alexey Molchanov about freediving last year, and in particular, what motivates and drives him to keep training and competing. He said something that struck me as unusual but was also very beautiful and true.  I suppose I was expecting him to say it was the glory and fame of World Records, the thrill of competition, or the adventure into the depths of the ocean and the depths of himself that drove him. But instead, he said that he trains because he loves the unique feeling of deep relaxation and tiredness that he feels afterwards. There is quite simply nothing like it.