Men, if you want to keep yourself physically and mentally healthy, don't "ambush" your own health. Only by changing bad living habits can you truly gain health. Drinking more lemon juice can prevent kidney stones. A recent study by researchers at Duke University in the United States found that drinking 800 milliliters of lemon juice a day can effectively prevent the recurrence of kidney stones. Professor Kang, who led the study, analyzed that lemon juice contains abundant citrate, which can react with calcium in urine, thereby preventing salt crystallization from forming stones. If you want your urination to be smooth, then insist on drinking half a cup of lemon juice every day. Drinking more grape juice is good for hypertension. A latest study in South Korea shows that drinking grape juice helps lower blood pressure. In this study, men who drank two cups of grape juice continuously for eight weeks, each cup weighing 200 grams, their systolic blood pressure dropped by seven points, and diastolic blood pressure dropped by six points. Anthocyanins, a substance found in grape skins, helps dilate blood vessels. Since purple and red grapes contain the most anthocyanins, it's best to choose dark-colored grape juice. Suppressing anger harms the back. A study by the American Institute of Basic Medicine found that suppressing anger can cause lower back pain. Scientists installed electrodes on 94 people with chronic back pain and asked them to recall some unpleasant experiences. Those who restrained their anger experienced 30% more discomfort in their waists than the baseline. Anger drives you into a "burst or not burst" mental struggle, and also puts most muscles in a tense state of readiness. If someone makes you angry, don't hold it in, let that anger surge out of your chest, and your back will thank you very much. I've got my eye on you, oranges. After Harvard scientists tracked 42,000 men for 16 years, they found that eating an orange a day is equivalent to drinking 168 milliliters of any other fruit juice, which reduces the incidence of disease by 40%. Vitamin C has multiple antioxidant functions and can prevent cells from going bad. However, pure vitamin C tablets may not have the same function.