Poor blood flow can cause a reduction in the temperature of the extremities, and researchers theorized that poor blood circulation could cause cold hands and feet, subsequently causing other problems such as insomnia.
Needless to say, the heart is responsible for the delivering of “warm blood” throughout the body. However, for some reason, it does not go flow through to the end of the body, like the hands and feet.
If you take thermography of the whole body, you can see
that the heat distribution of the body is not even. The upper body has higher temperature (98.6ºF = 37ºC around the heart), however lower body has comparatively low temperature; especially the temperature of the feet which is below 87.8 ºF (31ºC).
