Human Variation and Race Blog
The biggest issue with cold weather is that it lowers our heart rate. A slow heart rate does not ensure the proper blood flow throughout the rest of the body. This means that our brain and muscles will be blood deficient. This explains the reason for our body to shiver and have goosebumps on our body during cold weather. This is also an example of a short-term adaptation. The cold can negatively disturb homeostasis by lowering the body temperature causing the body to release nerve cells in our body to react. A disruption in homeostasis can cause yourself to feel dizzy, broken breaths, memory loss, and much more horrible things. All these effects can lead to a lower chance of survival in the wild. A short-term adaptation to the cold is when our legs get numb, which creates less blood flow. This then leads to a conservation of body heat, warming our body to adapt to the cold environment. A facultive adaptation to cold climate stress is when our nerve impulses to our brain are trig