The owner of these wonderfully sculpted abs is none other than the baby-faced member and the main vocal of B2ST, Yang Yo Seob!

On a recent episode of MBC Weekly Idol, idol group B2ST made a guest appearance promoting their new song, "Shadow", where they took the time out to find out who has the best abs amongst B2ST (thank you!). But if you follow Yang Yo Seob's personal Instagram, you may already be well aware that the idol has been working extra hard to sculpting his body for the comeback and even gifts his fans with sneak peak at his body from time to time.