How does the warmth of a heated pad actually work in the body?

Warmth spreads from the skin and connective tissue into deeper muscle layers. There, the blood vessels expand, circulation can improve, and tense muscles may relax. At the same time, warmth can activate the parasympathetic nervous system – helping the body switch into relaxation mode. Studies indicate that regular heat applications may even reduce the perception of discomfort. However, it is important to note: Heat should be avoided in cases of inflammation, fever, or fresh injuries. When in doubt, it is advisable to consult a doctor.