Actor Sam Corlett shed 57lbs to undergo a grueling transformation for his role in new movie He Ain’t Heavy. The Vikings: Valhalla star, a spin-off of the popular series Vikings, bulked up for his part in the Netflix show, but did the opposite for his next venture. The celebrity debuted his before and after photos to fans of the weight loss, which he says was under supervision due to its severity. Sam Corlett shared the pictures on Instagram to his 728,000 followers. Sam Corlett’s 57lb weight lossThe new flick, He Ain’t Heavy, follows a sister who kidnaps her brother to save him from his addict…