(Cover) - EN Showbiz - Amanda Seyfried works diligently on her physique and admits that keeping in top shape is in no way "easy".

The 25-year-old actress is incredibly fit. It takes Amanda's daily devotion to maintain her robust figure.

"I work my ass off! It's not easy," Amanda told Us Weekly at the Trump Golf Tournament for St. Jude's Children's Research Hospital. "Almost every day. Seriously, when I'm not working, I'm working out. It's not easy."

Amanda exercises so she can consume any type of food she wants. She loves desserts and couldn't imagine restricting her diet.

"I'm working out because I have to," Amanda explained. "I'm not the kind of girl who stays skinny. Plus, I like to eat sweets! I like to eat a lot."

Amanda's workout routine is almost entirely cardio. She loves to throw a punch from time to time and enjoys more hardcore physical activity.

"In New York, you can do anything. I go boxing regularly with my friend Andrew. I do Barry's Boot Camp religiously when I'm in New York and I'm going to start going in LA now too," Amanda said. "Plus, I have my trainer Harley [Pasternak] in LA."

Eating good food whenever she wants constitutes Amanda's primary workout motivation.

"[Eating] everything in moderation is my policy," Amanda said. "I had a hamburger for lunch. It's like, 'What the f**k? Who cares!' I like to eat."

Amanda's upcoming movie In Time co-starring Justin Timberlake will be released worldwide from October. (C) Cover Media