Olivia Munn might not like the gym, but the gym likes her! The star shared a photo of herself after a tough exercise class and she looked amazing in skintight activewear. Olivia, 40, was dressed in black leggings and a cropped T-shirt in the photo she shared on Instagram Stories. MORE: Olivia Munn stuns in open-back swimsuit for flawless beach photoWeights were stacked up behind her as she posed for the selfie which she captioned: "Altitude here is tough but still got it in