can we bath in cold water in winter instead of hot water baths using heater or geyser or gas for health benefits

 as per hindu puranas and scriptures karthika masa falls in winter season. 

puranas instructs us to wake up my by brahma muhurta everyday and take bath only in cold water in this karthika masa.

from this we can learn that it is good to take bath in cold water as puranas only suggest good things for our well being and better health. 

The sanskrit channel in the bellow video explains that about cold baths in karthik masa