Delhi-NCR is currently facing an intense heatwave, with the India Meteorological Department (IMD) warning that nighttime temperatures may reach 27 degrees Celsius. This persistent heat can have serious health implications, particularly for vulnerable groups such as the elderly and those with pre-existing conditions. High nighttime temperatures prevent the body from cooling down, leading to cardiovascular stress as the heart works harder to regulate temperature. Sleep quality is also affected, with increased difficulty in falling and staying asleep, which can exacerbate mental health issues like anxiety and depression. Additionally, dehydration risks rise as excessive sweating occurs even during sleep, increasing the likelihood of kidney strain and heat-related illnesses. To combat these effects, residents are encouraged to stay hydrated, keep their living spaces cool, wear light clothing, and avoid heavy meals before bedtime. Taking these precautions can help mitigate the adverse health impacts of the ongoing heatwave.