Zac Efron Gained 18 Lbs for 'The Lucky One'

Zac Efron Gained 18 Lbs for 'The Lucky One'

Zac Efron tucks his keys inside his pocket as he heads into a meeting in Los Angeles on Tuesday afternoon (January 11).
The 23-year-old actor beefed up for his role in The Lucky One, where he stars as Logan.
Zac told EOnline, “I was just eating, eating and eating.”
Zac will also be presenting at this weekend’s 2011 Golden Globes Awards.