We've all been there. You stay up watching "just one more episode," scrolling through social media, or finishing a bit of work. The next morning, you promise yourself you'll go to bed earlier... and somehow, the same thing happens again. But...

Take a careful look at the pan before you answer. Don't rush. At first glance, the answer seems obvious. Most people simply count the egg yolks they can see. But is that really the right way to count? Some eggs can have two yolks. Some...