Speaking to DailyMail, the controversial chef said: "Tana was not impressed with the way I was."
"I was overweight, 18 stone[114 kilos]. I looked like a sack of s***. I look at the pictures and think, 'How did Tana stay around?' Because Tana has got better-looking and more gorgeous. And there she is, getting in bed with a fat f***."
Heavily into fitness herself, Tana told him he was starting to look unhealthy and at that stage, Ramsay felt he had to get training. "It was painful. I used to look at myself in the mirror and think, 'Holy s***!' So it was a big wake-up call."
Nowadays Ramsay weighs in at about 87 kilos and participates in intense Ironman endurance events from time to time.
The 51-year-old explains: "I started focusing on getting super-fit five or six years ago when my life got super-busy. You get consumed by the work. You get sucked up. You get drawn in. All of a sudden your 'me time' is zero. There was no breathing space, no downtime, no time to even think straight. It all started hitting me hard. I didn't panic, but my head was not in the game."
And he's proven to have kept it off! Congratulations, Gordon!