She covers the May issue of Health magazine and inside, reflects on the past 20 years of stardom.And on Wednesday, Christina Aguilera shared a video clip to Instagram giving her fans a behind the scenes glimpse of the magazine photo shoot.In the caption, she quoted Megan thee Stallion's Girls In The Hood, writing: 'I’m sick of mfs tryna tell me how to live.' Stunner: Christina Aguilera shared a video clip to Instagram giving her fans a behind the scenes glimpse of her magazine photo shoot for the May issue of Health magazineIn the video, the singer, 40, is seen in a series of stunning outfits and striking sultry poses.She shows off her curves and a pout for the camera as her long blonde hair tumbles down past her shoulders.It comes after.