Scientists have discovered 5 main reasons for having sex

A group of researchers asked a question and decided to find out why all people so need regular sex. Scientists found 5 reasons why intimate communication is very useful for everyone's health.

1. Brings joy and happiness
   Researchers said that the first reason is that it brings people joy and makes them happy. Scientists conducted a survey among 1000 girls and found out from them what type of activity makes them as happy as possible. Participants in the survey said that sex is the No. 1 remedy, which brings them joy and happiness. Also, a study for 2004, in which 16,000 Americans took part, says that the joy of having sex at least once a week is about the same as having 50 thousand dollars in a bank account.

2. Relieves stress
   The second reason scientists have named is that the act of intimate communication fills the human brain with chemicals that in turn reduce the amount of the stress hormone cortisol responsible for causing harm to the soul and body.
   

3. Increases body protection
   Researchers from the University of Wilkes of Pennsylvania conducted their survey among college students to find out how often they have sex in a week. After that, the scientists studied their level of immunoglobulin A-antibody, which is the first line of defense of the body. Those who entered into an intimate relationship once or twice a week had the highest level of immunoglobulin A. This result was 30% higher than those who did not engage in intimate contact. In addition, those couples that have been dating for a long time already had an even higher level of antibodies. Thus, scientists came to the conclusion that sex helps to strengthen immunity.

4. Improves memory
   English researchers have discovered another important reason why it is worthwhile to have sex. They said that it has a positive effect on girls, as it helps to improve their memory. The more often they enter into an intimate relationship, the better the result. Representatives of the opposite sex who at the age of 50 to 89 have intimate relationships, receive a better cognitive function. Researchers also noted that sex at least once a week improves overall cognitive functioning.

5. Trains the heart
   Scientists have found out also that sex can serve as a good alternative to cardio. Researchers claim that sex is an intense aerobic exercise, which in girls burns 3 calories per minute. In addition, intimate communication strengthens the heart, reduces blood pressure, and also reduces the risk of diabetes of grade 2. According to experts, sex can be even better than a treadmill.