Your body is still detoxifying from harmful toxins and just feel your skin for a little moist or possibly sticky.
Saunas increase the body temperature. As a result the heart rate increases, and so does the volume of blood pumped out by the heart per minute, known as the cardiac output. The heart rate may double as a response to the heat.
It has been postulated that regular sauna bathing may improve cardiovascular function via improved endothelium-dependent dilatation, reduced arterial stiffness, modulation of the autonomic nervous system, beneficial changes in circulating lipid profiles, and lowering of systemic blood pressure.
It has been postulated that However, sauna bathing is safe for most people with coronary artery disease, stable angina pectoris or old MI (1). Very few acute MIs and sudden deaths occur in saunas, but alcohol consumption during sauna bathing increases the risk of hypotension, arrhythmia and sudden death, and should be avoided.