icemangj

What you are experiencing is called the lactate threshold or turn point. You can train to improve it and it will help on all your runs 10k, 5k, even marathons. It is a lactic acid build to a point that your body can not release it fast enough. Here is a good sight that explains it further.…

If I remember my science correctly, in an effort to dissipate heat, the body will pump blood to all extremities. When it is cold blood will pull toward the central organs in an effort to contain heat. Thus your fingers and toes get frostbite before the rest of you. Because your blood was naturally pushed and thinned in…