How to Scientifically and Rationally Understand and Use Viagra
1. The Birth of “Viagra” The birth of “Viagra” in the 1990s was one of the two major milestones in the field of andrology of that era. It marked the …
Restore your male vitality
1. The Birth of “Viagra” The birth of “Viagra” in the 1990s was one of the two major milestones in the field of andrology of that era. It marked the …
Generally speaking, a man’s erection strength tends to decline gradually with age. When a man has sexual desire but fails to respond physically even when aroused, it’s referred to as …