We reveal how to get the enviable physiques of the stars . This week : Laura Dern 's shoulders . Actress Laura Dern 's toned shoulders look to be the result of much gym dedication . Laura Dern says she keeps fit through yoga , swimming and taking the stairs . The 48-year-old mother-of-two , who recently starred in the film Wild with Reese Witherspoon , says she keeps fit through yoga , swimming and taking the stairs . But , she adds , it 's classes at SoulCycle ( a fast-paced exercise bike class ) in Los Angeles two to three times a week that keep her in prime bikini shape . At SoulCycle , you work the arms and shoulders with handheld weights and perform core-engaging moves to music . What to try : The overhead press works the muscles in the shoulder area . You will need a set of dumbbells or two bottles of water . But it 's classes at SoulCycle in Los Angeles two to three times a week that keep her in prime bikini shape . Stand with your back straight , feet shoulder-width apart , a dumbbell in each hand resting on the shoulders and your palms facing each other . Extend your arms overhead , allowing them to rotate so that when they are straight , palms face the front . Keep your trunk pulled in and do n't lean back . Make sure you do n't take the weights behind your head . Pause at the top , lower back down and then repeat 12 to 15 times .
Actress says she keeps fit through yoga , swimming and taking the stairs . Mother-of-two , 48 , also goes to SoulCycle two to three times a week . You can try an overhead press to work the muscles in the shoulder area .