How Britney Spears has found the line: "It follows an Olympic Training"

In case you missed it, Britney Spears  has created a buzz on the Internet this weekend by posting a super hot picture  where she wears a little itty bitty bikini.

The singer was on the set of her new video "Work Bitch", but it is not the only reason she is toned.

"She trains like crazy recently, as much as possible," said Tony Martinez , the coach of the singer told E! News exclusively. "It all sports at the moment, to prepare for the 90-minute concert in Las Vegas."

Although his workouts last less than one hour (40 minutes), Martinez said they were pretty tough.

"It's intense, of interval workouts to improve his heartbeat. During her concert, she'll sing and dance non-stop. Then during training, it takes only 10 to 15 seconds rest between each session" , said Martinez. "It follows an Olympic training. This is hard. Britney knew she had to speed up the pace a bit. She goes all out and she loves it, too! She loves to sweat, but it does not prevent m 'yelling too. "

Since the drive (it sometimes called "trickeration") is very intense, Martinez tried to make it as fun as possible by using all sports, then it also allows him to play tennis and football.

"She loves tennis. She loves to serve. It served asSerena Williams ! "

In addition to tennis, Martinez likes to fill his workouts for other sports such as boxing, football and basketball. And apparently Britney sacred biceps: "She managed passes screwed every time," said Martinez.

It also climbs fences 7 m and made ​​several records and exercises with elastic fitness recommended by his coach (which are part of the kit Travel Fit , on sale next week). Why? Britney really wants to tone her stomach."She always wants to work his abs," he confessed.

Just read it all, we are exhausted! There are only Britney to all that keeping her pretty smile.

Mentally and physically, it is 100% ready to Las Vegas She is very eager to get on stage and show everyone what form it takes," he was ecstatic, before adding: " She works very hard. But the result shows. It is in great shape and I am very proud of her.