Jason Day admits it, he did go too far with his weight training and it affected his golf game as he slid from world No.1 this year.
Day says junk food has been back on the menu and he has turned up at this week's Australian Open about nine kilograms heavier than he was at the start of 2017.
But he's happy with that, believing he got some things wrong in his endless search for the edge to help him retain the top ranking, which he held for 51 weeks.
He's been on a careful diet, eating healthy to ensure he stayed in great shape.
"Unfortunately I think I was doing the wrong things in the gym," Day said on Wednesday.
"I got a little too big in the upper body and it restricted my (swing) turn."
Testing showed the extra muscle had affected his swing and he has backed off since.
Not surprisingly, Day cited driving accuracy -- usually a strength -- as a problem area this year as he slipped to world No.12.
Day's gym admission came a day after veteran Geoff Ogilvy discussed ways his injury-prone compatriot could help ensure his career longevity.
Ogilvy questioned the wisdom of many younger players hitting the gym hard in the search for greater distance, believing the bulking up was responsible for a spate of injuries.
Meanwhile, Day says he'll leap at the chance to represent Australia at the 2020 Tokyo Olympics after making himself unavailable for golf's debut at the Rio Games last year.
Day cited concern about contracting the zika virus in Rio when he had a young family but he was concerned the decision may have come across badly back in Australia.
