Foreplay is an indispensable action before sex. When couples are ready to make love, both men and women are already in a state of mind. Only in this way can they achieve orgasm simultaneously and make sex more perfect. But before sex need to avoid the following several risk factors, not only can not help sex, but will fail sex. What are some dangerous sexual foreplay? Let mini sex dol tell you. 1. Drink Alcohol Some people think that alcohol is a stimulant for couples, but after drinking sex will consume gas and damage the essence. Drinking alcohol can temporarily increase the excitability of the brain's nervous system, but it can cause a temporary decline in sexual function. Women can experience ovarian dysfunction, which affects ovulation. Male penile erection difficulty or short duration of penile firmness. In addition, sex life after drinking alcohol will increase the testosterone binding globulin content in the male body, bring damage to the testicles, weaken the ability to secrete sex hormones. In addition, most of the sperm after drinking is underdeveloped, if pregnant at this time, there may be fetal mental disorders. No matter what kind of alcohol, such as liquor, beer, wine and cocktails, you should not have sex within two hours of drinking. 2. Hot bath Many young couples take hot showers together before having sex, but more than five minutes in a hot bath depletes energy. Originally sex needs to store enough physical energy, if sex in this case, is bound to shorten the length of the penis. In addition, the whole body will gradually relax during the hot bath, and the various organs can not be excited quickly. The intense sex life will make the sexual organs quickly congested and damaged, and the rapid pulling action will also damage the muscle fibers. In addition, long-term hot bath can also reduce the sensitivity of the body, especially the female sexual organs sensitivity, difficult to achieve orgasm. Clean yourself before having sex and spend no more than five minutes in a hot bath. 3. "Small" movies Many men used to watch "small" movies before sex, which can increase the amount of sex hormones in the body. But studies have shown that the more visually stimulating the "small" movie, the more people's nervous system overexcited, under the high stimulation of sex can leave the brain in a state of hypoxia and ischemia. Short periods of ischemia can enhance sexual pleasure, but over time, the lack of oxygen in the brain can exceed physiological limits, causing dizziness or collapse, and even damage to the brain and heart. Try kissing, touching or saying sweet words to stimulate desire before sex. 4. Arguing Generally, lovers who have quarreled will use physical tenderness to solve emotional impulses, but after the quarrel, the whole body Qi and blood operation is reversed and stagnant. In this state, sex life will aggravate the disorder of Qi and blood operation, induce a series of problems, and even sexual aversion. Men and women should forgive each other after an argument and wait until their emotions are completely calm before having sex. 5. Fatigue After a long day of running, you come home at night with impaired qi, dragging your tired body and having a hard time reaching orgasm. Especially when both men and women are physically exhausted, whether it is psychological or physical fatigue, the most terrible is that there may be fear and boredom, and even the development of sexual apathy. Sleep on it and wake up when you're well rested. Warm reminder Avoid these five points during sex, or it will make it worse. In addition, you can't have sex on a full stomach, otherwise it will make a lot of blood flow to the sexual organs and brain, and reduce the blood flow to the gastrointestinal tract, which is easy to lead to indigestion, disorder of blood circulation throughout the body, and even dizziness and nausea.