Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Strong bond with parents leads to healthy children > Health-in-Motion 02 September 2016 The human body requires a certain amount of darkness to remain healthy The human body requires a certain amount of darkness to remain healthy. Too much light can be bad for you – a fact that should be of concern for people who are exposed to bright light for long periods, including certain shift workers. Research involving mice has confirmed that six months of continuously living in bright conditions results in a significant loss of bone mass and endurance along with increased inflammation. The good news is that most of the effects are reversed quite speedily once a regular day-night cycle is re-established. 0 More in Newsletters Work-family balance More: Daily Dose: Strong bond with parents leads to healthy children Health-in-Motion advertisement Other news Lifestyle Kids' metabolism may slow down during puberty Medical 'Natural killer' cell infusion may help leukaemia patients Diet and nutrition How to make sure you achieve your goals Medical Alcoholics may lack enzyme that controls impulse to drink Parenting Bond between kids and parents has long-term health benefits Medical Heavy drinking can harm the ageing brain From our sponsors How to still have a good life with diabetes Eye-Q: R50 off! Lose weight Otrivin Menthol relieves sinus congestion Live healthier Love coffee? Your heart may too » What to eat for white teeth Bad foods for teeth-whitening Do any of these drinks cause your teeth to hurt? Savour your coffee – with a bright smile Here's how to stop coffee from staining your teeth while enjoying all its health benefits. Get your groove back! » Get your move on! Morning run? 5 exercises to start your summer fitness regime 6 easy ways to make your workout fun again Some inspiration to make sure your workout routine don't become tedious.