India, Oct. 21 -- Dr Dhirendra Singhania, director of interventional cardiology at Yashoda Medicity, said sudden exposure to extreme temperatures in cold plunges and saunas makes the cardiovascular system respond quickly, affecting blood pressure and heart rate, according to an Oct. 8, 2026 article by Adrija Dey.
Cold plunges and cardiovascular response
Dr Singhania said cold water leads to constriction of blood vessels, which can increase blood pressure and put stress on the heart.
He added that in the initial moments of a cold plunge, breathing may be quickened and hard to control. He also said prolonged immersion or exposure to extreme cold can put stress on the cardiovascular system.
The cardiologist identified people who should be ...