Floyd Mayweather says returning to Rocky Balboa-style "throwback training" pushed him to the limit ahead of his super-fight against Manny Pacquiao.
The unbeaten American meets Pacquiao, 36, in Las Vegas on Saturday in a bout expected to be the richest in history.
"I have to go back to where it all started from. I have to go back to day one. Chopping wood, it's the best for you," said 38-year-old Mayweather.
Mayweather has been chopping 700lb (317.5kg) tree trunks - a method depicted by American actor Sylvester Stallone in his portrayal of fictional boxer Rocky Balboa - during training.
"It all started with the sledgehammer when I was 10. When I was 13 or 14, I started chopping with the axe."
http://www.bbc.co.uk/sport/0/boxing/32484363
The unbeaten American meets Pacquiao, 36, in Las Vegas on Saturday in a bout expected to be the richest in history.
"I have to go back to where it all started from. I have to go back to day one. Chopping wood, it's the best for you," said 38-year-old Mayweather.
Mayweather has been chopping 700lb (317.5kg) tree trunks - a method depicted by American actor Sylvester Stallone in his portrayal of fictional boxer Rocky Balboa - during training.
"It all started with the sledgehammer when I was 10. When I was 13 or 14, I started chopping with the axe."
http://www.bbc.co.uk/sport/0/boxing/32484363