Girls' Generation's Tiffany shared why she doesn't tend to gain weight on the first episode of Mnet's 'Heart_a_tag' on April 24.

SEE ALSO: "They're so good, this is what K-pop should be like," Girls' Generation's past live performance gains spotlight after 8 years

Tiffany, who co-hosts the show, met up with her fellow member Sunny at a dessert cafe. She introduced Sunny, saying, "She's my friend who likes and eats desserts the most." Producers asked why they don't seem to gain weight when they love desserts, and the Girls' Generation member answered, "It's because we talk a lot. We also move around a lot."

Sounds simple enough! Did you catch the first episode of 'Heart_a_tag'?