With a drop of three degrees, you'll find it difficult to coordinate your fingers. Seek shelter immediately. When your temperature drops five degrees, you won't be able to walk and you'll stumble and fall and not be able to get up. Then you may not be able to get out of the cold and your body temperature can continue to drop rapidly and you can die. If your clothes are wet, your temperature will drop even faster. Take the warning signals seriously; if you have slurred speech or difficulty using your hands, take action or you may not get another chance.
This is the scenario: a guy, say age 21, becomes serious about gaining muscle. He’s 5′ 10″, 7″ wrists, 9″ ankles, average genetics for muscle size-and-proportioned. He’s played sports, but never done more than an occasional resistance workout. Now, he begins a good training-eating-and-resting program. With his genetics, he has the potential for naturally gaining 45 pounds of lean mass if he stays consistent with progressive training/proper eating for a continuous 3 to 4 years.
But, about three months after beginning his training, he starts taking steroids. He does three steroid cycles in the following 18 months, and includes proper post-cycle therapy. That entire time, he’s continuing to consistently train and eat properly. Before the end of two years, he’s gained 45 pounds of lean mass (which with steroids, by the way, is not necessarily typical but neither improbable). At that point, he permanently quits using steroids, but he does continue properly training and eating for another two years. At the end of four years, he carries the same 45 pounds of lean mass.