How does Viagra work? V*agra relaxes muscles and increases blood flow to improve erections. During an erection, chemicals in the body cause the p*nis to relax and blood to accumulate. This blood stays in place, keeping the p*nis erect. If this blood isn't kept in place or if the muscles don't relax, erectile dysfunction occurs. V*agra works by keeping these muscles relaxed and increasing blood...

How to get an erection?Erections are more complex than you might think. Many functions are involved, from hormones to blood vessels, nerves, and even the brain. An erection begins with sensory and mental stimulation. During s*xual arousal, nerve signals activate the p*nis, where impulses from the brain and local nerves relax the muscles in the corpora cavernosa. This stimulates blood flow to...

What is Viagra? V*agra is a prescription medication commonly used to treat erectile dysfunction, a condition that affects more than 150 million people worldwide. While the brand-name drug comes in blue tablets, generic sildenafil comes in white tablets. V*agra and its generic counterparts are available in 25 mg, 50 mg, and 100 mg tablets. How does Viagra work? V*agra works by relaxing the...

Are you getting enough sleep? True or false? Older people don't need as much sleep as younger people. Drivers with dark circles under their eyes can stay awake better by turning up the car radio and rolling down their windows. Night-shift workers eventually get used to their night shifts. Boredom is tiring. All of these claims are false. But if you've been fooled, you're not alone. A recent...