Los Angeles, April 28 :  Actor Zac Efron struggled to keep his cool alongside “Baywatch” co-star Dwayn Johnson as he fell head over heels during an embarrassing moment on the set. Efron tried hard to nail the iconic “Baywatch” run down the beach. The slow-motion jog along the sand is one of the most memorable parts of the classic TV show. (ALSO READ: Pamela Anderson to appear in the ‘Baywatch’ film revival) Also Read - Priyanka Chopra Jonas Makes Heads Turn in Sexy Dior Dress, Viral Pictures Leave Fans Swooning Over Sultry-Summery Vibe

It all got a bit too much for the star as he ran alongside his co-stars, including Johnson, and ended up slipping and hitting the ground, reports mirror.co.uk. Later, he couldn’t resist sharing an image of the hilarious moment on Twitter. He wrote: “*think cool thoughts * run cool- hit em w/ that COOL #Baywatch run… “Oh yeah, Feelin it *think coo- AGH WTF #notcool (sic)”