Runner's High - it's a state of the body accompanied by feelings of euphoria. Marathon runners know that drugged-like state after a long distance run. It comes as a body's response to pain. Then anger comes. Then acceptance. Relief. The Wall is laid behind, and here last kilometers come and finally you're high. 

Personalities of the video: 

Oleg Maximov — guitar 
Denis Markin — piano 
Teodor Faber — bass 
Zinoviev Kirill — drums 
Andrey Pilipenko — audio 
Egor Yurchenko — video