Health conscious Aniston celebrates b'day sans cake

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Aniston will turn 41 Thursday.

The two have pulled on their exercise gear for another gruelling work-out. Thesun.co.uk reports, their healthy lifestyles are obviously paying dividends on the physical front, with both 40-plus actresses displaying bodies most 20-somethings strive to achieve.

The twosome were spotted sun-lounging at their private pool at the weekend.