David Haye has highlighted speed as a priority ahead of his fight against Manuel Charr next month.
The former WBA heavyweight world champion will compete in his first bout since beating Dereck Chisora at Upton Park last July.
The 32-year-old told Sky Sports News: "There is definitely a great emphasis on speed during this training camp, as I know it will be important in the fight.
"I might not be the biggest heavyweight in the world, but I'm certainly the fastest, and that is one advantage I'll always have over my opponents, especially now, as I enter my peak athletic years.
"There is nothing quick or explosive about the way he fights and he won't have seen speed, reflexes and agility like mine. If you look at his previous opponents, none of them compare to me in terms of style. They were all happy to take turns to punch Charr and fight his tempo."
Charr's only defeat in his 24-fight career came against Vitali Klitschko, when the referee stopped the clash because of a cut.
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