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.
Food and Hydration Tips for Cold-Weather Hiking. Your bodyâs metabolism is its best heat source, so you need to keep it fueled up with food and water. Remember to eat and drink: When itâs cold outside, you might be less inclined to stop for food and water.