Despite being on the wrong side of 30, Universal boss Chris Gayle is firing all cylinders and his fitness mantra is as simple as one can get.

The 39-year-old, who will be playing his fifth and final World Cup for West Indies, has revealed that he hasn’t been to the gym for the last two months, as he is more focused on improving the mental part of the game. And for that matter, he has said that he is getting a lot of rest.

"I am just taking a lot of rest, getting a lot of massages, lots of stretching, just trying to stay fresh for games. I know what is required to keep me going on the field," Chris Gayle told PTI.

"Age catches up as you ain't getting any younger. But the most important thing for me is the mental part of the game. It is not so much about the physical side of the game anymore. I have not done much fitness in the last couple of months," said the Windies veteran.

"I use my experience and mental aspect. I have not done gym for some time.

"You have to stick to your own formula,” said Chris Gayle.

And as it turns out, the Jamaican’s secret has panned out perfectly well, as he showcased his explosiveness in the recently concluded Indian T20 League with absolute style, having scored 490 runs at 40.83 (including 34 sixes).

Gayle has been equally explosive in the ODIs of late. Just before the Indian T20 League, the 39-year-old smashed the English bowling attack in every direction and scored 424 runs just in boundaries in mere four innings. And for West Indies, Gayle’s return in form has come in the best time possible.

"It is a funny game you know. When the World Cup comes, hopefully, the runs would flow. I have a lot of experience, so I know what it is like. I am just happy with the way I am batting right now and hope to carry on," said Gayle.