How to increase sexual stamina naturally?

A varicocele is an enlargement of the veins draining the testis, similar to a varicose vein. It is common — present in roughly 15% of men generally and more frequently among men attending fertility clinics. It usually occurs on the left, often causes no symptoms, and may be noticed as a dull ache, a dragging sensation, or a "bag of worms" texture on examination. The fertility connection is thought to relate to raised scrotal temperature and impaired blood flow affecting sperm production. Not every varicocele affects fertility, and many men with one father children without difficulty. Repair is generally considered where there is a palpable varicocele together with abnormal semen parameters and difficulty conceiving. It is not routinely recommended for a varicocele found incidentally with normal semen analysis, or for one detectable only on ultrasound. Where repair is appropriate, semen parameters improve in a substantial proportion of men, though this takes several months and does not guarantee conception. Please see a urologist or andrologist for examination — this is a clinical diagnosis and needs assessing in person.