Traditional rejuvenation techniques to invigorate kidney energy: kidney shaking method, breathing exercises, scrotum massage, and kidney-protecting exercises.

Kidney deficiency is quite common in middle-aged people, and it's also frequent for those who engage in long-term mental work to experience weakened kidney qi, manifesting as insomnia, fatigue, and frequent colds-all caused by excessive consumption of kidney qi. For these individuals, in addition to resting, it's recommended to regularly "shake the kidneys." The specific method is as follows: Make fists with both hands, palms slightly hollow, and place them on the kidney points (the area commonly known as the lower back, or lumbar region). Gently bounce, keeping your toes on the ground-a slight tiptoeing sensation. Keep your fists still, and let your whole body shake along with the movement until you feel a slight warmth in your lower back. Simultaneously, the shaking of the knees leads to a full-body shake, activating all joints, especially the spine. Therefore, it's very beneficial for those who work at desks to relax the spine and protect the lumbar vertebrae. The greatest benefit of this method is stimulating kidney qi, quickly generating yang qi in the body. People who engage in prolonged mental work often lack exercise, leading to an excess of Yin energy and a relative deficiency of Yang energy in the body. This can result in symptoms such as weakness, fatigue, and forgetfulness. Therefore, the "kidney-shaking method" is very suitable for those currently engaged in mental work. Shaking for three to five minutes each time can relieve the fatigue of an hour of continuous work. Of course, this method is also suitable for the health maintenance of middle-aged and elderly people. When kidney Qi is declining, massaging the Shenshu acupoint has a direct kidney-tonifying effect. Friends with knee joint injuries may not be able to perform the kidney-shaking exercise, so they can use kidney rubbing instead. After rubbing their hands together to warm them, they can rub the area around the Shenshu acupoint on their lower back up and down with their palms until the area feels warm each time, which also has a similar health-preserving effect.

The "Exhaling the Old and Taking in the New" exercise is an ancient Chinese rejuvenation technique. It involves expelling stale air from the body and then inhaling fresh air. This breathing therapy enhances physical and mental health, prevents disease, slows aging, and promotes rejuvenation and enhanced sexual function. 1. Abdominal Breathing: Abdominal breathing involves inhaling while expanding the abdomen and exhaling while contracting it. It's simple and easy to learn, and can be done standing, sitting, or lying down, but lying in bed is best. Lie supine on the bed, loosen your belt, relax your limbs, clear your mind, and slowly inhale through your nose, expanding your abdomen. Hold each breath for 10-15 seconds, then exhale slowly. Breathe 4 times per minute. The duration of abdominal breathing is up to the individual and can be combined with chest breathing for alternating respiratory movements. This method fully contracts and relaxes the abdominal muscles, accelerating blood circulation and eliminating blood stasis in the abdominal cavity and mesentery. 1. Continue this for two weeks, and your body will naturally feel refreshed, your appetite will increase, and your skin will become rosy. 2. The Inhale-Contraction-Exhale Method. This breathing method is actually the reverse of abdominal breathing. First, sit in a chair or stand. Begin by expelling stale air from your lungs, then relax your muscles to release all tension. Then, inhale forcefully, contracting your abdomen to its maximum extent. Next, relax your shoulders, allowing your abdomen to expand, and slowly exhale. Repeat this three times, and you will be able to use this method easily. Additionally, when inhaling, place the tip of your tongue behind your upper teeth and inhale entirely through your nose; when exhaling, place your tongue against your lower jaw and exhale through your mouth. When practicing this method, concentrate fully, feeling the airflow reach every corner of your body. 3. The Rejuvenating Breathing Method. This method combines abdominal breathing, the inhale-contraction-exhale method, and anal sphincter exercises to improve kidney function. Repeated practice can have a significant effect on strengthening kidneys and improving sperm quality. Exercise method: When inhaling, contract your abdomen and simultaneously tighten the anal sphincter muscles for a certain period of time; conversely, when exhaling, relax the anal sphincter muscles. Also, be careful to inhale slowly and deeply, drawing air into the anal area, and then slowly relax.

Lu You, a patriotic poet of the Song Dynasty, lived to the age of 85 despite his many hardships in life. This was mainly due to his deep understanding of health preservation. One of his secrets to health preservation was "warming the testicles". In his "Jiannan Poetry Collection", he wrote: "If you want to live a peaceful life, you must warm the two pears with your own hands". The "two pears" here actually refers to the two testicles of a man; and the word "warming" vividly describes the key point of this method - after warming the palms of your hands, hold the testicles and massage the penis and lower abdomen at the same time. The specific method is as follows: (1) Before going to bed, lie on your back (standing or sitting is also acceptable), relax your body and concentrate your mind, warm your hands by rubbing them together, hold the testicles with one hand from bottom to top, and place the other palm on the upper edge of the pubic symphysis in the lower abdomen (located in the vas deferens area), and rub the testicles upward with both hands 81 times, then switch hands and do it again 81 times. (2) Warm your hands by rubbing them together, hold the testicles and penis, and rub them back and forth 81 times. (3) Hold the scrotum with both hands and push upwards 3-5 times. (4) Before going to sleep, rub your hands together to warm them, then cup the left and right scrotums in each hand to warm them. Sit silently (or lie down) and regulate your breathing. You will then feel the fluid from the kidneys melting into your lower back like mud. If you are older, weak, or have difficulty moving around, you can practice lying down (of course, everyone can practice lying down). First, lie on your back on the bed (it is best to cover yourself with a blanket depending on the room temperature), spread your legs slightly apart, bend your knees at 120°, then support the scrotum with one hand and massage the lower abdomen with the other hand. You can then begin the practice. The specific operation method is the same as above. To prevent you from going astray and becoming unable to stop, here's an "antidote": If your penis becomes erect due to local stimulation during the practice of "Scrotum Pulling," shift all your attention to your navel, close your eyes, clench your teeth, press your tongue against the roof of your mouth, and tighten your anus. Imagine a stream of energy starting from your perineum, traveling up your spine, over your head, and down to between your eyes (Yintang acupoint). Maintain this focus for 5 minutes, then clench your teeth, swallow saliva, and direct it to your middle dantian (the Tanzhong acupoint, the midpoint between the nipples). This will restore your penis to its original state. Additionally, pay attention to genital hygiene when practicing "Scrotum Pulling." Wash your hands thoroughly before practicing. If you have eczema, dermatitis, or other discomfort in your genital area, refrain from practicing until you recover to avoid further complications.

Those with kidney yang deficiency should practice some kidney-protecting exercises when the kidney meridian is at its peak around 5 or 6 pm. This has a good effect on kidney health and the treatment of kidney disease. The following set of kidney-strengthening exercises is most suitable for exercise when the kidney meridian is at its peak around 5 pm. It has the effects of tonifying the kidney, consolidating essence, strengthening the waist and knees, and clearing the meridians. As long as you persist for a long time, you will definitely be able to replenish kidney qi and live a long and healthy life. The method is as follows: (1) Sit upright with your legs naturally separated, shoulder-width apart. Bend your elbows and raise your hands to the sides with your fingers pointing upwards, level with your ears. Then, raise your hands until you feel a pull in your ribs, and then return to the starting position. You can do it 3 to 5 times as one set, and you can do it 3 to 5 times a day as appropriate. Before doing the exercise, you should relax your whole body. Inhale when raising your hands and exhale when returning to the starting position. The force should not be too great or too strong. This exercise can activate muscles and bones, clear the meridians, and at the same time, allow qi to return to the dantian. It has a relieving effect on the elderly, weak, and short of breath. (2) Sit upright, bend your left elbow and place it on your thighs, bend your right elbow and place your palm upward, and perform a throwing motion 3-5 times. When performing the throwing motion, throw your hand upward in the air, and the movement can be slightly faster. Inhale when throwing your hand and exhale when returning to the starting position. The effect of this movement is the same as the first movement. (3) Sit upright with your legs hanging naturally, and slowly rotate your body left and right 3-5 times. Then, swing your legs forward more than 10 times, which can be increased or decreased according to your physical strength. Relax your whole body when performing the movement, and the movement should be natural and slow. When rotating your body, keep your torso upright and do not bend or lean back. This movement can exercise the waist and knees, benefit the kidneys and strengthen the waist. Regularly practicing this movement can exercise the waist and knees and benefit the kidneys. (4) Sit upright, loosen your belt and loosen your clothes, rub your hands together to warm them, place them on your waist, and rub up and down until your waist feels warm. This method can warm the kidneys and strengthen the waist. The waist contains the Mingmen acupoint of the Du meridian, as well as the Shenshu, Qihaiyu, and Dachangshu acupoints of the Bladder meridian. After rubbing, you will feel a warming sensation throughout your body. It has the effects of warming the kidneys, strengthening the waist, relaxing muscles and promoting blood circulation. (5) Stand with your feet together, cross your hands and raise them overhead. Then, bend over and touch the ground with your hands. Then squat down, hug your knees with your hands, and silently say "blow" without making a sound. You can do this more than 10 times in a row.

The lumbar spine is governed by the kidneys. If you also have similar symptoms, here's a recommended remedy for lower back pain – the "Shaking Mountain and Swaying Sea Method." "Mountain" refers to the upper part of our body, and "sea" refers to the kidneys. This method can cure lower back pain without medication and greatly replenish kidney qi, showing noticeable effects within a month. It truly is a "kidney-strengthening exercise to enhance the foundation of one's constitution." The "Shaking Mountain and Swaying Sea Method" is similar to a regular waist-twisting exercise, but with a few more techniques. First, press your thumb on the Mingmen acupoint (located in the depression at the center of the spine along the back, along the navel). If this is difficult, you can also press your thumb on the Shenshu acupoint (1.5 inches to the side of the spine); the effect is the same. Then, twist your waist as usual, three times to the left and three times to the right. If your lower back hurts a little at first, don't worry, take it slowly. After a few days, you'll be able to "shake freely." Gradually, you'll feel a warm, comfortable sensation in your lower back, like a small stove – this is a sign that kidney yang qi is rising. The Mingmen acupoint is located on the Du meridian, a Yang meridian, while the Shenshu acupoint is located on the Bladder meridian, a Taiyang meridian. Both are key acupoints for treating kidney deficiency. Regularly massaging these points can treat impotence, seminal emission, blurred vision, tinnitus, deafness, edema, and lower back pain caused by kidney deficiency. Furthermore, frequent massage of the Mingmen and Shenshu acupoints can strengthen the kidneys, prevent and treat various kidney diseases, enhance physical strength, and has the effects of restoring vitality, delaying aging, and promoting health and longevity. To fully utilize the magical effects of the "shaking mountains and swaying seas" method, one must also "internally contract the anus" while twisting the waist. What is "internally contracting the anus"? The "anus" refers to the gastrointestinal tract, the passageway for digesting grains. Simply contract the anus slightly, as if holding back a bowel movement. The "Internal Anal Lifting" exercise is remarkably effective. The *Internal Kung Fu Manual* states, "Tightly clench the anus and lift internally, the bright moon shines atop the head; to attain longevity, replenish essence and nourish the brain." The "Shaking Mountain and Swaying Sea Method" is a kidney-strengthening exercise that invigorates the innate foundation (kidneys), allowing exercise for all internal organs, limbs, and bones. Therefore, it not only harmonizes qi and blood, unblocks meridians, dispels cold and relieves pain, but also strengthens the kidneys, invigorates the life gate, and nourishes the brain and spirit. Furthermore, it is also very effective for some common chronic diseases, especially insomnia, excessive dreaming, and gastrointestinal disorders. By using the "Shaking Mountain and Swaying Sea Method," twisting a little each day, you'll gradually become healthier, and your body will grow stronger day by day.

Follow-up Note: The above generates content for articles 21 through 30. I have also updated the collection document in the report panel. Please let me know if you need to generate subsequent chapters (starting from article 31).

Based on your request, I have generated content for Chapters 31 to 40 of "The Complete Book of Health Details That Benefit Men for a Lifetime". The main text of each article strictly retains the original text, with specific structural words (such as "Chapter X" or "see the image below") removed, and the length of each article is controlled between 1500 and 2500 Chinese characters.

Article 31