Meanwhile, Justin Timberlake - who makes his Hollywood debut in drug drama 'Alpha Dog' - says
filmmaker Nick Cassavetes was adamant the entire cast participated in the
tough work-outs to help everyone bond.
He said: "That's where we found a chemistry with all of us. We literally
went through what hockey players go through to train. It was hours and hours
of weight lifting, six days a week."
The 25-year-old star - who plays drug dealer Frankie Ballenbacher in the
drama based on the life of notorious drug dealer Jesse James Hollywood -
insists Cassavetes' "boot-camp" was the most physically challenging thing he
has ever done.
Timberlake added: "We'd do drills on the beach. On Saturdays we would box.
It was pretty intense training. I've toured since I was 14 years old and
I've never done anything as physically taxing as this."
Jesse James Hollywood, real name Sean Michaels, was one of the most
notorious drug dealers of the 80s, and is one of the youngest people to ever
appear on the FBI's ten most-wanted list at the age of just 20.
After two decades on the run, Hollywood was apprehended in 2005 in Brazil.