The aging process is an inevitable process of human metabolism, and research shows that the physiological functions of middle-aged men begin to go downhill, which is closely related to the mental stress, diet and living habits of men. Therefore, do not ignore the changes in the body, not to “cover your ears” to live your life, the result will be a small disease into a major disease. So, what are the signs that indicate that the male body is starting to decline? A, memory decline brain cells will gradually decrease with age, the brain’s chain of command “short circuit”, resulting in a decline in command ability, agility and accuracy significantly reduced. These are the signs that the brain is aging, especially the brain workers, who often feel overwhelmed. Second, loss of appetite Generally speaking, loss of appetite is a common thing in the elderly, after the age of 50, 50% of people have a loss of appetite, which is due to the gradual decay of gastrointestinal function, but for middle-aged people, loss of appetite is a signal of aging that cannot be ignored. Third, the exercise ability is weakened after exercise, the phenomenon of rapid heartbeat lasts for a long time, can not calm down, indicating that the regulation ability of the heart is getting lower and lower, the heart’s own reserve capacity has been reduced. This is caused by the aging of the heart muscle and weakened elasticity. Fourth, vision loss With age, the eye lens continues to thicken, the retina becomes thinner, gradually appearing vision loss and inaccurate focus. Vision is becoming more and more distant, eyes dry, tears become less, eyes become yellow, blurred vision; or photophobia and blurred vision at night, etc. V. Hearing loss After the age of 40, the tympanic membrane becomes thicker and the ear canal atrophies narrower, resulting in a decline in the discrimination of high-frequency sounds. Hearing loss occurs when there is poor blood circulation in the inner ear, and hearing loss is one of the most common problems in middle and old age. Age spots and hair loss The skin gradually becomes thinner, less elastic, dry and less lustrous, and even age spots appear; hair starts to turn gray and gradually thins out, and even hair loss. Seven, fatigue 40-year-old men in work or life is always low energy, lethargy, and also often dizziness, dizziness, tinnitus, headache, may be caused by psychological stress or physical function decline. Eight, oral changes oral saliva decreased, dry mouth; teeth gradually began to loosen, the color of teeth deepened, the texture of brittle, easy to break, or self-loss; gums gradually shrink, gaps become wider, the increase in calculus and deposits in the gaps and around the gums, often leading to dental caries and infection, affecting speech, swallowing and taste. Muscle and bone changes Muscle starts to decrease and become flabby; bone cortex becomes thinner, bone toughness and elasticity decreases, bone colloid decreases a lot, bone brittleness increases. Bones become smaller, shorter in height, more prone to fractures, muscles, ligaments and joints flexibility also decreases with each passing day, activity is limited. Sexual ability changes Sexual life is not easy, manifested as low libido, slow sexual response, reduced erectile capacity, short duration of orgasm, reduced sensitivity of the penis, premature ejaculation, testicular shrinkage, etc. Eleven, the heart is tired, panting After going up the stairs, running panting, indicating a decline in physical fitness, lung capacity decline, endurance decline. Twelve, obesity, weight gain Around 40 years old is “big belly”, holding a big belly, obesity is fatty liver, hypertension, diabetes, hyperlipidemia and other disease risk factors. Thirteen, poor sleep Sitting dozing, lying down to sleep, sleep time is getting shorter and shorter, waking up more and more time; sleep is not solid, a little wind will wake up, and even insomnia. How can you tell if your body functions are prematurely aging? Here is a small self-test method: hands naturally down, close the sides of the thighs, close your eyes, stand on one foot, and judge the degree of aging based on the time it takes for one foot to be independent and stable without moving. The measurement standard is: 9.9 seconds for men aged 30-39; 8.4 seconds for men aged 40-49; 7.4 seconds for men aged 50-59; and 5.8 seconds for men aged 60-69. The longer you stand, the slower you age. Those who do not reach the standard time indicate that your physiological age is already higher than your actual age.