Amir Khan v Danny Garcia: Briton in top condition for title decider thanks to conditioner Ruben Tabares Khan said: "What Ruben has educated me is to look after my body and it has completely changed the way I feel about food. If I had a burger now, I'd probably poison my body. Early in this training camp, I had a pizza slice late one night, when I felt a bit peckish, and it gave me stomach cramps. My diet is now so clean, I feel stronger, can train harder and I'm also making weight so much more easily. Important point, here. Khan had to lose 11 pounds in weight 48 hours out from his last fight, in December 2011, in the now infamous fight with Peterson, who has since admitted he took a synthetic steroid prior to that contest and was stripped of the World Boxing Association title he won from Khan that night. Two days ago, Khan learnt that the WBA had mandated that the title will be on the line in tonight's contest. Ruben is tough on me. You have to sleep on time, train hard, eat right, and we never take it easy. I need to be pushed, and this is the hardest I have ever been pushed," Khan said. Tabares, who has also worked with leading footballers including John Terry, said: "Amir is a brilliant athlete but he is also dedicated. He's very driven. But his nutrition wasn't clean. I told him: "Once I clean your body if you have even one piece of bread, your body is going to get ill because it is going to reject it. It will treat it like a poison. Physically, Amir is special," said Tabares. The only danger for Khan is if he underestimates Garcia, the unbeaten 24 year-old. Khan has all the tools at his advantage: speed, movement, and experience. Garcia, nonetheless, likes a tear-up and Khan has shown that he can be drawn in. After being drawn toe-to-toe by Peterson, Khan is talking of painting the canvas this time. Seeing him in the Wild Card Gym on July 4, 10 days before the bout, he has never looked better physically. This is a great opportunity to showcase his skills and speed but also a chance to show he can think his way through the fight, and pick his punches astutely. Carrying the WBA belt in will make a difference to him mentally. If he fights from the outside, he will pick Garcia off. Anything less, and it will not be viewed as the perfect way to step up another weight division, as he begins his ascent to his ultimate goal of challenging Floyd Mayweather Jnr.