Why do you feel sleepy even drinking coffee? Foreign media revealed six major signals of body alarm.

When the body is overloaded, even if there is no obvious physical exhaustion and psychological breakdown, our body and brain will send out a variety of signals indicating that "enough is really enough!" Recently, the United States "Oprah Life Network" carried an article that summarized the "6 signs that the body exceeds the limit" for you.

1. Even after a nap. Naps can recharge the body. However, naps last up to about 30 minutes and are usually light sleep, said Dr. Christopher Winter, director of the Sleep Medicine Research Center at Jefferson Hospital in Massa, Virginia. However, if you start having strange dreams as soon as you close your eyes during your nap, it means that your brain is seriously short of sleep and can't wait to enter the deep sleep stage.

2. Memory deterioration. Dr. Anne-Marie Albano, director of the Anxiety and Related Disorders Clinic at Colombia University, said some healthy people have poor memories. In fact, these people are "brain overload", hormone changes disrupt memory function, so that people can not remember more content, easy to forget recent things.

3. It's worse after exercise. Dr. Sarah Berga, professor of obstetrics and gynecology at Wake Forest University School of Medicine, said jogging for 45 minutes is generally relaxing, but if you feel tired at the beginning of exercise, your body is already overloaded. Dr. Berga found that stressed women who exercised at moderate intensity were less energized and felt tired.

4. Coffee makes you sleepy. Dr. Michael Brees, an American clinical psychologist, said coffee drinking alters brain activity. If caffeine doesn't work, it means that the body and mind are extremely tired, which counteracts the stimulant effect of caffeine.

5. Eating mild foods can also aggravate pantothenic acid. A study published in the American Journal of Psychosomatic Medical Research confirmed that stress does not cause pantothenic acid, but it can aggravate pantothenic acid. Even if you don't eat spicy food, pantothenic acid symptoms are still present or worse, indicating excessive stress.

6. Scalp becomes sensitive. Dr. Richard Fred, a Pennsylvania clinical psychologist, said stress often causes an increase in neuropeptides and other natural chemicals in the skin, causing inflammation. This inflammation can flare up in the form of acne or rosacea, and some can cause blood vessels to constrict, making the skin of the face and head too tight, prickly, or sensitive.