A qualitative study on commercially available: Sleep monitoring systems and sleep analysis tools

The sleep quality and quantity impact directly on human life style, occupation and health by improving one's memory, maintaining blood pressure, keeping proper functioning of endocrine system and metabolism. Short term sleep directly increases risk of cardiovascular disease(34·35·36· 37) Sleep produces testosterone, growth hormone, insulin hormone to build muscle mass and repair cells and tissues. In long term, night shift workers found an increased risk for colon, prostate, breast and endometrial epithelial malignancies together with non-Hodgkin's lymphoma which contribute to all-cause mortality(39-42 ·43· 44· 45,46). [...]sleep has been split up into two types NREM and REM sleep.