From playing as a materialistic old sister in "Cheese in the Trap" to being a chic neurosurgeon in "Doctors", fans saw a different side of Lee Sung Kyung in the recently ended drama series, "Weightlifting Fairy Kim Bok Joo," where she took the role of an athlete.

The come-of-age sports drama brought out the boyish side of Lee Sung Kyung as she played as a gifted weightlifter who dreams to excel in her chosen field. Previously, the amateur actress admitted it was not easy for her to meet the requisites to portray the role of Kim Bok Joo.

Lee Sung Kyung even had to gain weight for the lead role, admitting that she even experienced depression when she started the process. However, the actress added she got used to it when "Weightlifting Fairy Kim Bok Joo" started rolling, The Chosunilbo cited.

"It was my first leading role, so I felt a lot of pressure, but I tried to take it easy. I kept telling myself to stick to the script and my character," Lee Sung Kyung said in an interview.

The actress added she later felt comfortable playing as Kim Bok Joo after focusing in each scene. Lee Sung Kyung also said she is reminded by her youth when she thinks of "Weightlifting Fairy Kim Bok Joo."

"You are free to try anything when you are young," the 26-year-old actress said, supporting the final message of her drama: "I don't have anything, and I have nothing to lose, so I'm not afraid. That's youth."

In a separate interview, Lee Sung Kyung talked about her friendship with other celebrities including Lee Jong Suk, who even made a cameo appearance in "Weightlifting Fairy Kim Bok Joo."

According to Soompi, the actress said she has been friends with the "W" star for 10 years already, stating that they know each other well. Known for her outgoing personality, Lee Sung Kyung is revealed to be friends with Choi Tae Joon, Yoon Kyun Sang and more.

The "Weightlifting Fairy Kim Bok Joo" actress added she is more comfortable hanging out with her guy friends, yet, Lee Sung Kyung revealed she never had a boyfriend since high school.