Andrade and Srihari compiled data from 200 teenagers. Nearly all of them admitted to picking their noses, on average four times per day. That's not all that enlightening; we knew this. But what are interesting are the patterns. Only 7.6% of students reported sticking their fingers into their noses more than 20 times each day, but nearly 20% thought they had a “serious nose-picking problem”. Most of them said they did it to relieve an itch or to clear out nasal debris, but 24 of them, i.e. 12%, admitted that they picked their nose because it felt good.