Of course you do. Your body is an engine, it runs on energy. A car burns gas when it's idling, right? While you're sleeping, your stomach is digesting, your lungs are working, your brain is dreaming, your heart is pumping, skin cells are being replaced, blood is flowing, kidneys are filtering waste, liver is well, doing whatever the liver does...all activities that need energy. 12 calories per 10 minutes for sleeping might be peanuts compared to 100 calories per 10 minutes running, but there is definite caloric expenditure 24 hours a day, even while sleeping.
SIX YEARS at maintenance weight!
My very long weight loss story
"I saw an angel in the marble and I chiseled until I set it free."