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Amazon billionaire Jeff Bezos and his mistress Lauren Sanchez spared no expense on their physical fitness during their illicit affair.

Photos obtained by DailyMail.com show the newly-buff Bezos and his taunt-and-toned paramour heading off to take a hike at the Malibu Canyon on October 30.

Rather then drive there however, Bezos and Sanchez were seen heading over to the Santa Monica airport and using her helicopter to fly the 20 miles from the airfield to the canyon.

The pair then pampered themselves after their hike by enjoying his-and-her spa treatments in Santa Monica before retiring to her $4.3 million love nest.