How to Exercise in Extreme Cold

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How to Exercise in Extreme Cold         Exercising outdoors can be safe, even exhilarating -- just dress right. Read More WATCH VIDEO: How Exercise Rewires Your Brain: Video Exercise does more than flatten abs. It physically alters your brain to better handle stress. Groundbreaking: Embryonic Stem Cells Made With Acid         Physically stressing white blood cells encourages them to revert to a state equivalent to an embryonic stem cell. Read More WATCH VIDEO: First Cloned Human Embryos Yield Stem Cells Scientists have cloned a human embryo and extracted stem cells. Snakes Take on UFO Shape to Fly         Flying snakes take on a strange shape that helps them to stay airborne over long distances. Read More WATCH VIDEO: Snakes Show Slithering Secrets Snakes move a lot more like humans than you'd think. Cow Farts Blow Up A Barn!         A static charge triggered an explosion of methane gas in a barn in Rasdorf, Germany, earlier this week. Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2013 Discovery Communications, LLC