Yesterday Zac Efron headed out to the gym with pal Bubba Lewis for a workout.

Efron & Bubba were spotted on their way in Los Angeles, and they looked like they were ready to hit the weights.

The HSM hottie is having quite the year!  It’s no wonder he makes staying in shape a priority.  He’s still filming “Seventeen” with Matthew Perry, and later this year he’ll star in “High School Musical 3: Senior Year,” as well as “Me and Orson Welles.”

If only I was a teenager again …