Zac Efron and Alexandra Daddario on naughty pranks, David Hasselhoff and on-screen chemistry in Baywatch

Zac Efron and Alexandra Daddario are rising stars in the acting world, with Zac finding his fame back in 2006 in High School Musical, and Alexandra finding hers more recently with True Detective and Percy Jackson.

And now, the pair are starring in the new comedy remake of Baywatch! So we took the chance to ask them a bit about life on set.

First, we found out a bit about the 'chemistry test' the pair had to do before filming started, which according to Zac is just like speed dating.

Nick then asked Zac how it felt to be filling David Hasselhoff's large Baywatch shoes, and whether he had him on speed dial for tips during filming. It turns out he wasn't too far from the truth!

And finally (because we couldn't resist), we asked Zac about the hilarious moment in Baywatch, where Chris 'The Rock' Johnson pulls a fake 'object' out of a bag, to prank Zac during filming. And they actually kept that full scene in the final cut!

For more interviews like this, check out our YouTube channel, and listen to Magic in the Morning with Nick Snaith every morning from 6!

Watch the trailer for Baywatch here:

• Zac Efron
• Alexandra Daddario
• Baywatch
• screen