The extraction process to remove the lead from the sulfur is very simple, thus lead has been extracted from Galena since the earliest times.Galena from certain regions is rich in silver, and some specimens may contain as much as 20 percent silver. Because of this, silver-rich Galena is also an ore of silver.
Being exposed to sunshine will also increase your levels of vitamin D. Hiking is a cardiovascular activity, depending on how hard you push yourself during a hike, and thus has benefits for your cardiovascular system, such as reducing the chances of heart disease, and increasing your overall fitness.
Make Hiking More Fun! What you do before hitting the trail makes all the difference between pleasure and pain. Hiking with family and friends is fun until you're halfway up a steep trail with an aching back, quivering thigh muscles, and burning lungs. But with a little prehike training, you'll feel great, have more energy, and avoid posthike pain and stiffness. Sign up for daily health tips, plus exclusive offers.