India, Oct. 8 -- Bath water temperature is part of wellness routines that take you to both ends of the temperature scale, from sweating it out in a sauna to shivering in an ice-cold bath. But how does your heart respond to these extremes, especially when you move straight from one to the other?ALSO READ: Can excessive training enlarge your heart? Cardiologist warns of silent condition called athlete's heartDr Dhirendra Singhania, director of interventional cardiology at Yashoda Medicity, weighed in to comment on how cold plunges and saunas affect your cardiovascular system, who should be cautious, and which warning signs need closer attention.

"For the heart, these extreme water temperatures are not passive," he alerted. "Sudden changes ...