Heat as a cardiovascular stressor
Sauna exposure raises heart rate and changes circulation as the body works to manage heat. Research suggests repeated heat exposure may support vascular function markers, but individual risk matters.
Who should be cautious
People with cardiovascular disease, fainting history, pregnancy, or medication concerns should consult a qualified clinician before beginning intense heat exposure.
Studies Reviewed
Heat therapy and vascular function
moderate evidenceCardiovascular physiology researchers · Cardiovascular physiology literature · 2024
Repeated passive heat exposure has been associated with vascular and blood pressure-related markers in some studies.