7 simple ways to improve men's sexual ability (sex knowledge adult novel)

Men can only fully enjoy sexual intercourse when their erections are good and lasting.
The latest issue of the American magazine "Men's Health" introduces 7 simple methods to help men easily get a first-class erection.
Resolutely quit smoking. A study by the University of Kentucky in the United States found that the average erectile dysfunction of male smokers is 5, while that of non-smokers is 9.
"The harmful substances in cigarettes can cause blood vessel damage and make the corpus cavernosum of the penis lack elasticity," said Irving Goldstein, a urologist at Boston University Medical Center.
Another study found that smokers have significantly smaller penises than non-smokers.
If a man has completed his life of having children, he may want to consider having a vasectomy.
Contraceptive failure is an important cause of anxiety for some men. This will affect men's erections, further creating a vicious cycle that affects emotions, and ultimately become a "temperament" killer.
After a brief affair away from your lover, erectile dysfunction is likely to follow.
In fact, many doctors of sexual medicine often warn their patients that "underground love" can induce guilt, which can also lead to anxiety and cause ED.
Don't have sex too vigorously. More than 1/3 of men with ED have suffered penile damage. During sex, "woman on top" and too intense sex are both factors that threaten the penis.
Walking or jogging every day