WBC welterweight champion Floyd Mayweather Jr. of the U.S. poses on the scale during an official weigh-in at the MGM Grand Garden Arena in Las Vegas, Nevada, May 2, 2014. Mayweather faces WBA welterweight champion Marcos Maidana of Argentina in a WBC/WBA
1. Floyd Mayweather$105 Million REUTERS/Steve Marcus

In the 12-day run-up to the Floyd Mayweather-Marcos Maidana rematch on Sept 13, the unbeaten American boxer is using the publicity generated by media interest in his training to flaunt his millions of dollars.

Watoday.com.au reports, for instance, that Money May shows up for his yoga sessions - part of the 37-year-old retiring boxer's regimen to maximise his flexibility - in his Bugatti.

But for his snack, the champ prefers fast food fare from McDonald's - which is just a working man's affordable and preferred meal when in a hurry.

However, what would surely qualify as flaunting of his wealth is Money May, who recently sought investment advice from the Oracle of Omaha, Warren Buffett, placing $100 bills on his yoga mat.

During break, a member of the Money Team arrives with the food order of Mayweather. The boxer ate two Big Macs.

Mayweather is practicing the popular Bikram Yoga because training for a boxing match does not only involve punching bags but also performing the mental and physical exercises of Bikram Yoga, he explained.

Bikram Yoga classes run for 90 minutes, made up of the same series of 26 postures and two breathing exercises. The sessions are usually held in a room with a temperature of 40 degrees Celsius and 40 per cent humidity.

Joining the boxer in is yoga sessions are girlfriend Doralee "Bad" Medina and daughter Iyanna.

More behind-the-scenes from the training of Mayweather and Maidana in the video below.

YouTube/shosports