1. Lingering in Bed Too Long

Staying in bed after waking up is common, especially among office workers with heavy workloads who struggle to get up early. While adequate sleep relieves fatigue and restores energy, many mistakenly believe extra sleep boosts health and promotes teenagers’ growth, so they lie in bed far longer than necessary whenever possible. This unhealthy habit damages physical well-being over time.

After an overnight fast, the stomach is empty and hunger signals emerge. Staying in bed disrupts regular gastrointestinal rhythms, eroding gastric mucosa and triggering gastritis, gastric ulcers and indigestion in the long run. Therefore, it is vital to maintain a reasonable sleep schedule and healthy daily routines.

2. Urinating Immediately Upon Waking

The bladder is full of urine after a whole night’s sleep, creating an urgent urge to urinate. The stronger the urge, the slower you should move—never jump up to urinate right away. Emptying the bladder abruptly after waking easily causes dizziness and even micturition syncope.

3. Strenuous Exercise Right After Waking

Moderate morning exercise is beneficial, yet exercising violently the moment you open your eyes brings little health reward and carries risks.

If you keep a morning workout routine, rest for a while after waking until qi, blood, yin and yang circulate in balance. Otherwise, cardiovascular and cerebrovascular emergencies may occur.

4. Skipping Breakfast

Nutrition experts confirm breakfast is the most important meal of the day. After sleep, the body is ready for daily work and study and requires abundant nutrients to sustain all-day energy expenditure.

Harm to the brain

Brain tissue only accounts for 2%–3% of body weight, yet it receives around 800 ml blood flow per minute, consumes 45 ml oxygen per minute and uses about 5 grams of glucose per hour.

Teenagers’ developing brains demand more blood, oxygen and glucose than adults. Persistently low blood sugar impairs mental activity and hinders normal brain growth and development over time.

Harm to the digestive system

Food eaten the previous night empties from the stomach into intestines in roughly six hours without breakfast the next morning. Gastric acid and digestive enzymes will start to corrode the stomach lining instead of digesting food.

In the long term, the stomach cells’ mucus-secreting function is impaired, greatly increasing risks of gastric and duodenal ulcers and other digestive disorders.