As the years have rolled by, Jermain Defoe has sought new ways to stay ahead of the game.
The 34-year-old abstains from alcohol. He has regular sports massages. He was renting a cryotherapy chamber at a cost of £1,000 a time for three minutes in sub-zero temperatures at his home before Sunderland introduced them at their training ground under Sam Allardyce.
Defoe has always paid close attention to his diet, and now he is taking that one step further. Attempting to force his way into one final England World Cup squad, the striker has turned to veganism.