<ul><li>Taking a longer afternoon nap may reverse the benefits of napping, making one feel groggy all day and increasing the risk of diseases like diabetes, heart issues, and high blood pressure.</li><li>Researchers from Brigham and Women's Hospital in Boston have found that taking siestas of 30 minutes or longer is linked to a higher BMI, higher blood pressure, and other conditions associated with heart disease and diabetes.</li><li>People who are sleep deprived are more likely to benefit from afternoon naps, but sleeping for more than required hours can do more harm than good.</li></ul>

Long afternoon naps can be deadly; Experts on many ill effects of sleeping during daytime

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