Red Velvet talked about their lack of sleep.

On the July 25 airing of 'Lee Su Ji's Gayo Plaza', the girl group was asked about their average sleep hours.

Yeri responded, "In the beginning of our comeback, we really did not get to sleep at all, but now it has gotten better so I think we sleep about 3 hours." DJ Lee Su Ji commented, "You guys lack sleep but still look so pretty."

Currently, Red Velvet is promoting their summer mini album 'The Red Summer' with the title track ''Red Flavor''.