'Sleep is when your blood pressure falls; this nocturnal dip is when the heart gets rest.'
Dr Udgeath Dhir, director and head, Cardiothoracic and Vascular Surgeons, Fortis Memorial Research Institute, Gurugram, explains why you must take extra care of your heart.
Aneesh Phadnis and Veena Mani find out what the manufacturers and the hospitals have to say.
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