Why does a nap sometimes leave us more tired?
Nap Trap
Why does a nap sometimes leave us more tired?
You flop onto the couch for a "quick twenty minutes." When you wake up, your head feels stuffed with cotton, your limbs weigh a thousand pounds, and you're somehow MORE tired than before. What just happened?
Your brain runs on cycles, like a washing machine with different settings. When you fall asleep, you drop through light sleep into deeper and deeper stages. The deepest stage — called slow-wave sleep — is where your brain waves roll like ocean swells, slow and powerful.
