Zac Efron Bares His Muscular Arms During Workout!

Zac Efron Bares His Muscular Arms During Workout!

Zac Efron showed off his muscles at the gym today!

The High School Musical alum flaunted his biceps on Instagram on Monday (December 18).

He was joined by his Greatest Showman co-star Hugh Jackman.

“Showing @zacefron the sights … #aussie #workout,” Hugh captioned the pic, which Zac reposted.

ICYMI, watch the duo perform a live commercial for The Greatest Showman during the live A Christmas Story Live the day before. It included 150 dancers in a massive spectacle of song and dance.

Don’t miss The Greatest Showman when it hits theaters this Wednesday!

A post shared by Hugh Jackman (@thehughjackman) on

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Photos: Instagram
Posted to: Zac Efron