Jake Gyllenhaal fully committed to his starring role on the new Prime Video film Road House. Appearing on the Thursday, March 21, broadcast of This Morning, the 43-year-old sat down with anchor Sian Welby to share a glimpse inside the intense lifestyle change he underwent in preparation for his portrayal of Elwood Dalton, a former UFC fighter who becomes a bouncer at a dive bar in the Florida Keys. Ahead of the film, Gyllenhaal — who stars alongside UFC fighter Conor McGregor, 35 — had a diet regimen so strict he wouldn’t even allow himself to have “one chip” in an effort to maintain chiseled …