Why you should never drink coffee right after waking up — and what to eat instead

gettyimagesbank

Click here for more articles by Kormedi.com.

After a night’s sleep, the body remains in a prolonged fasting state. If dinner was eaten early, that fast can last up to 12 hours by the time you wake up. How you manage this period can determine your physical rhythm for the morning. Here are several morning habits to follow – and others to avoid – to help your body start the day in balance.

Bad breath occurs on an empty stomach — rinse or brush right after waking up

Morning breath can damage a person’s first impression. It tends to appear right after waking up or when fasting for long hours. According to the Korea Disease Control and Prevention Agency, saliva production slows during sleep, which allows bacteria to multiply in the mouth. Ideally, you should brush your teeth immediately after getting up, or at least rinse your mouth with water. Bad breath becomes more common with age and can worsen during menstruation or pregnancy due to hormonal changes.

Workouts on an empty stomach may help with weight loss — but pose danger for diabetics

Some people believe exercising on an empty stomach aids fat loss. However, it can be dangerous for those with diabetes or unstable blood sugar levels. Working out before eating increases the risk of hypoglycemia, when blood glucose levels drop abnormally low, potentially leading to shock or even a coma. Symptoms include trembling, cold sweats, palpitations, nausea and tingling in the hands and feet.

If your blood glucose level is below 100 mg/dL before exercising, it is advisable to consume around 15 grams of carbohydrates first. For safety, carrying candy or other quick sources of sugar is recommended.

Strong coffee right after waking up? Good for alertness, bad for your stomach

Many people reach for a strong cup of coffee the moment they wake up. While it can boost alertness, it is harsh on the stomach lining. Those with gastritis or ulcers should take extra care to avoid it, as caffeine and chlorogenic acid can worsen symptoms. Coffee contains beneficial antioxidants, but it’s best consumed after eating something light to protect the stomach. Having it later in the morning, such as after arriving at work, can also help improve focus without irritating the digestive system.

Skipping water and eating high-fat foods first thing in the morning

A glass of water on an empty stomach acts like a tonic. It replenishes fluids lost overnight, helps thin thickened blood and jump-starts metabolism. Water also washes away stomach acid, allowing beneficial probiotics in foods like yogurt to survive longer in the digestive tract.

After rehydrating, start your breakfast with vegetables, eggs and whole grains such as brown rice or whole-wheat bread. These foods aid blood sugar control. In contrast, processed meats high in saturated fat, such as ham, sausage or bacon, and white bread with jam should be eaten sparingly.

This article from Kormedi.com, Korea’s top health care and medical portal, is translated by a generative AI system and edited by The Korea Times.