Andy Murray revealed that he has turned to pilates and a yoga style favoured by dancers to prolong his career after back surgery.

The Scot underwent an operation after his Wimbledon win in 2013 to tackle a recurring lower back problem, and took up yoga afterwards to keep supple and strong.

READ MORE: I'm taking Wimbledon one match at a time

Murray practises the gyrotonic style of yoga, which involves specialised equipment and incorporates movements from dance, gymnastics, t'ai chi and swimming.

He credited his exercise regime since the surgery with keeping him pain-free, and with his 30th birthday less than a year away hopes it will help keep him in good shape as he enters the latter part of his career.

He said: "I used to train extremely hard. I don't think I looked after my body as well as I should have done. That was something that changed a few years ago.

READ MORE: Scots tennis ace Andy Murray and comedian Kevin Bridges doubles act at Wimbledon

"My back, now that I have been looking after it, doing way more different types of stretching - sort of injury prevention work - my back is no issue whatsoever, whereas for two years I was in a lot of pain because I was training hard but not doing the right stuff to get it better."

HeraldScotland:

With his mental strength being the envy of many - and one of the keys to his fourth-round whitewash of Nick Kyrgios on Monday - Murray said he uses meditation-type exercises before and during matches to help retain his focus.

He also reads notes on the court before a clash to reinforce key elements of his game that he needs to concentrate on.

And he revealed his diet for a successful day at Wimbledon - a breakfast of a bagel with scrambled eggs, half a bagel with peanut butter, a milk, banana and berry smoothie and a whole melon, followed by salmon and rice before the match and pasta with broccoli and chicken afterwards.

The 29-year-old toyed with a gluten-free diet in the past, one that Novak Djokovic credits with saving his health and tennis, but told Men's Health this month that he abandoned it after it caused him to lose too much energy.

READ MORE: Scots tennis ace Andy Murray and comedian Kevin Bridges doubles act at Wimbledon

Murray faces Frenchman Jo-Wilfried Tsonga in his quarter-final clash on Wednesday and was out practising on Tuesday to be ready to face a man he said was "one of the best grass court players in the world".

But he has also found some time to relax away from the tennis, watching the football and keeping up to date on the political fallout from the referendum.

He said: "I've watched a lot of the Euros. When I get back, when the games have been on in the evening, I've watched some of them.

"I just try and stick to the same routines on the off-days, practising at the same time, afternoon just home with my family. In the evening I watch a bit of sport, watch the news. That's it."