Inside Andy Murray's 6,000-calorie-a-day diet that led to Wimbledon glory

's life has changed since he entered retirement in August.

One of the first things he experienced was weight loss,

It's no surprise he had such a drastic drop, as the two-time Wimbledon champion consumed 6,000 calories a day at the height of his career.

Thanks to the demands of the tennis tour, players must make sure they're fuelled for matches and eating enough to avoid losing muscle. That was no different for Murray during his playing days.

The former world No. 1 was said to have eaten a fish-based diet and loved sushi - even eating a whopping 50 pieces in one sitting. Murray's team ensured there was always a good sushi restaurant nearby when he travelled on the tennis circuit.

He even kept sushi in an ice cooler at Wimbledon so it could be brought to him at the end of a match. At regular tournaments, the three-time Grand Slam winner would typically have two boxes of sushi as soon as he came off the court and a third box after his press conference.

Before a match, the focus was on protein and carbs. Usually pasta or rice with a chicken breast, and sometimes a banana if he wanted a snack. The strict regimen paid off - he lifted the trophy at his home Grand Slam tournament twice.

The Brit ate six meals a day, starting things with a big breakfast. Murray would typically eat fruit, a bagel, yoghurt and a smoothie or protein shake. Later on in his career, he would drink coffee with a scoop of collagen.

Murray also drank six litres of water a day, mixing water with electrolytes for matches. Even as his career slowed down, he was still consuming at least 4,000 calories daily before he retired.

Since hanging up his racket, the two-time Olympic champion hasn't been as hungry because he's not been exerting anywhere near as much energy.

When he appeared at the BMW PGA Celebrity Pro-Am last month, Murray said: "It's been five weeks I've not been in the gym, longest ever for me probably.

"I don't know if it's like appetite, if I'm not eating as much. But we obviously have like loads of the sport drinks have got lot of calories in them, and I only really drink water and coffee now.

"So I don't know, I think just less calories and probably loss of muscle. I've lost about 11, 12 pounds. It's a lot. I was expecting the opposite to happen. It's about five kilos, yeah."