In the shaft of the penis, there are two side-by-side chambers of spongy tissue called the corpora cavernosa. They're mainly responsible for erections. Just below them is another chamber called the ...

Winter air isn't just cold: it's dry, too. Dry air inside is well-known to cause itchy skin and dry throats, but it can also increase the amount of germs and viruses in your home. The best humidifiers ...