Have you ever woken up on a Saturday morning at your usual weekday time, even when you didn’t have to? It’s tempting to groan and roll over, but in truth, this is a really good sign. It means your circadian rhythm (your internal body clock) is working exactly as it should. Your circadian rhythm quietly runs in the background, regulating far more than just your sleep. It affects your energy, appetite, digestion, and even mood. Just like your body learns when to expect breakfas