There's no denying that Britney Spears is looking phenomenally fit these days (case in point: those lingerie ads !), and now her trainer, Tony Martinez , is giving E! News the exclusive scoop on Brit's exercise regime.
The answer? Summer beach workouts. "I wanted her to have something at the beach," said Tony. "It's so calming and peaceful. You can see the dolphins out there, and I try to make the exercises facing the ocean."
Tony and Britney workout together two times a week and each session is about 30 to 40 minutes. "I don't want it to get boring, so I change it up a lot," he said. "But it's always at the beach and it's always interval training."
So what, exactly, does a summer beach workout entail? Since Britney's day is so busy, Tony tries to maximizes her time by doing interval exercises that use her whole body. He packs two exercises within each one and always adds an abdominal component.
After each exercise Tony and Britney will play a game of five-point volleyball. And what happens if the pop star loses? "She has to run to the ocean, and I want to see her touch the water and come back," said Tony.
The sand plays a big role, too—and Brit does the workout barefoot. "It's a full-body workout in the sand," said Tony. "We do crab walks and bear crawls in the sand."
As for which areas Tony's routine for Britney focuses on the most? Abs and legs. "Her abs and legs look great because of all that work in the sand, and it's easier on the joints," he explained.
A typical exercise Britney and Tony do are "cement mountain climbers." In this exercise, "Britney's forearms are against or lying on a cement wall and she is kneeling over with her feet on the Tony Martinez Core Discs, and she brings the discs toward the cement wall or toward me," said Tony. "She will do 25 of those."
A typical resistance exercise Tony does with Britney is when Britney uses a Tony Martinez Band wrapped around a volleyball pole and does a chest press with a forward lunge on the core discs.
Another exercise? "She pulls the band back and does a reserve lunge with one leg and then again on the other side," he said. "She does 20 of those."
She'll also do a court exercise where she holds a volleyball and "single hops like a bunny" along the length of the net. She'll touch the top of the net with the ball and then continues to hop and touch, going across one side and then does it again along the opposite side of the net.
Another court exercise they do is when Tony will stand in the center of the court and throw the volleyball as high in the air as he can, and Britney will hit the ball back to him. Britney travels in a 360-degree circle around him as they continue to volley back and forth.
Tony explained his workouts require a lot of stamina and there isn't any downtime. "During the interval workout there is about 10 to 15 seconds between them. She gets very little rest," said Tony.
And sometimes they'll throw in something new they've never done before. "One time, we ran from pier to pier, which is four miles," said Tony. "When we were done Britney said, 'I would definitely do that again!' She is tough, and she wasn't even out of breath."
But even though Tony's workouts are rigorous, he explained that there's a big emphasis on fun. "I think that's the whole point about being by the beach," he said. "It's about feeling good and having fun."
So how does Brit hold up? "She is tough. Her stamina is really great now," Tony gushed. "She doesn't get tired. I'm the one huffing and puffing!"
And even though Britney isn't able to train with Tony every day of the week, she likes to use the Tony Martinez Travel Fit Bag when she's working out alone, which includes his resistance bands and core discs.
For more from Tony Martinez, check out his website and follow him on Instagram and Twitter @trainertony.
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