Crus of constant regular meeting is jerky when ran after the weather is cold, be how to return a responsibility?

After the weather is cold, crus of constant regular meeting is jerky when my ran, be how to return a responsibility?
After the weather is cold, the skin and sarcous temperature lift not easily, cramp is the method that body self protects, let you limit your movement below the case that did not prepare, lest cause bigger loss. Wear pants or stocking ran will be helpful. Additional, want to increase the time of warm up.
Warm up, it is to show the fitness having oxygen with small intensity will make his body enters the most pleasant stage gradually commonly, temperature lifts slowly, the heartbeat rises, breathing divide evenly fast become fast. Haemal circulation is rapidder also, such oxygen and nourishment also can be carried heart and muscle, for your athletic ready-made, a after purpose of warm up activity is achieved important sign is the body begins to perspire slightly. The time 5-10 of warm up minute OK.
The person does not want warm up to save time and a lot of enter the training having oxygen of high strenth directly, because cardiovascular system and lung are returned,did not enter state so, temperature is lower also, sarcous flexibility is bad, cause loss easily. Move again after warm up additionally, the feeling also is met better, athletic time is OK also longer. In other words, not warm up moves, you are easier and fatigue.