Eunhyuk revealed that Super Junior had a problem because of its numerous members.
On the July 8 episode KBS 2TV’s “Hello”, both Super Junior and EXO talked about the problems they had due to their large group size. EXO said, “When we do rehearsals, it’s hard to get all 12 members. So we have designated numbers that we count off before we go on stage.”
When Eunhyuk heard this, he joked, “For us, if someone’s missing, we just go without them. We do it on purpose so there’s not much of us on stage because the profit is divided by the number of members performing. If someone looks even a little sick, we tell them to ‘Rest up’.“
taken from: allkpop