Seeing Zac Efron shirtless and Channing Tatum shirtless at the same time might be too much hotness to handle. Check out these studly actors at the beach -- which of these muscular hotties gets your vote for the best shirtless body?

This shot of Zac Efron shirtless is a bit older, but we can assure you he's kept up the hard work at the gym over the past couple of years. The former 'High School Musical' star has maintained his absolutely fabulous physique by switching up his workout routine between cardio and strength training. Here, we see him showing off his muscles at a Cali beach, where he was hanging out with his 'HSM' co-star Ashley Tisdale.

Meanwhile, Mr. Magic Mike himself, Channing Tatum, exhibited why he was voted Sexiest Man Alive by PEOPLE magazine when he stripped-down at the beach in early 2013. He was vacationing with his gorgeous wife, Jenna Dewen (who just gave birth to the couple's first child, daughter Everly), when this shirtless pic was snapped. Tatum had exited the water post-snorkeling session on the shore of St. Barths, showing off his ridiculously hot bod.

So, who gets your vote for the hottest shirtless celeb? Zac or Channing? Cast your vote below!