INFINITE's leader Sunggyu guested on 'Strong Heart' and revealed that the other members tease him.

Sunggyu was featured as a guest on the June 5th broadcast of 'Strong Heart', and brought laughter on set with stories about his nickname, "old man".

The INFINITE member revealed that he was called an "old man" as a joke by the other members on a broadcast ('Sesame Player Season Two') as he is the oldest in the group. Being labeled as a weak, old man on the show, fans began to truly believe Sunggyu to be the most weak and frail member.

Sunggyu explained that fans who believe he has a lack of stamina have been sending him things like ginseng that will hopefully give him more physical strength.

In related news, INFINITE swept up all the music programs last week, achieving their first music program all-kill with "The Chaser".

Watch Sunggyu tell his story on June 5th's 'Strong Heart'.

Source: Newsen via Nate