(Cover) - EN Star Style - Reese Witherspoon says trying to get in shape for comedy movie How Do You Know was mind-blowing.

In the film, the 34-year-old blonde beauty plays Lisa, a sports player who finds herself cut from the US softball team and in the middle of a love triangle.

Reese trained extremely hard for the part, working with coveted coach and softball master Sue Enquist and the USA Womens softball team.

The actress found exploring the physical and emotional aspects of being a sports player fascinating, and admits she was hugely impressed by what she saw.

Id never really known many athletes in my life, so jumping into their world and learning how much they work out and how much of a personal life they have was mind-blowing, she told Closer.

For the film - which also stars Owen Wilson and Paul Rudd - the star worked on basic softball skills such as throwing and catching, as well as improving her posture and overall fitness. (C) Cover Media