Zac Efron kicked off his promotional tour for Charlie St. Cloud, which hits theaters on the 30th, yesterday with an appearance on Good Day Philadelphia. He's getting to work after spending some holiday downtime with Vanessa Hudgens in LA, where he showed off his impressive arm muscles but kept his sexy abs covered on the beach. He's sure to stay busy through the rest of the year as well with two recently announced projects. Zac told the morning show host that he maintains his fit physique by regularly breaking a sweat, especially when he's busy doing press — check out their chat after the jump.
To see Zac's interview, just read more.