![Screen Rant on Twitter: Screen Rant on Twitter:](https://pbs.twimg.com/media/ENDAjAQWwAAtHOv.jpg)
Screen Rant on Twitter: "Zac Efron was infected with a life threatening virus while filming the series Killing Zac Efron. Fortunately, he appears to be OK now. https://t.co/0XoC5yngaJ… https://t.co/jGwdqNkeBy"
![Zac Efron looks RIPPED as he goes shirtless to complete obstacle course on set of Baywatch movie - Mirror Online Zac Efron looks RIPPED as he goes shirtless to complete obstacle course on set of Baywatch movie - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article7519629.ece/ALTERNATES/s1200c/Zac-Efron-working-out-while-filming-Baywatch-in-Miami-Beach.jpg)
Zac Efron looks RIPPED as he goes shirtless to complete obstacle course on set of Baywatch movie - Mirror Online
![Of course it's hard. It's supposed to be hard: Buff Zac Efron enjoys a break from filming in Hawaii as he shows off his bulging biceps in a tight blue tee at Of course it's hard. It's supposed to be hard: Buff Zac Efron enjoys a break from filming in Hawaii as he shows off his bulging biceps in a tight blue tee at](http://i.dailymail.co.uk/i/pix/2015/06/08/15/29717E5600000578-3115424-Bulging_biceps_Zac_Efron_was_enjoying_a_break_from_filming_new_c-a-111_1433774379768.jpg)