Formula One ace Jenson Button works out with Playboy model girlfriend Brittny Ward

FORMULA One ace Jenson Button goes full throttle as he works out with girlfriend Brittny Ward.

The McLaren driver, 36, and the Playboy model were clearly determined to do more than a few laps as they hit a park in Los Angeles for a gym session.

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And they both showed they had plenty of fuel in the tank as they performed a fast-paced series of squats, crunches and lifts.

Jenson and Brittny, 26, have been dating since March, just months after the ex-champion split from wife Jessica Michibata.

Their marriage had lasted less than a year.

But it looks like American beauty Brittny has helped Jenson get his love life firmly back on track.

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