South Africa has kicked-off the National Sleep Week, which highlights the importance of good sleep health for individuals to best achieve their personal, family and professional goals. According to experts, many people are sleeping less than ever before. In fact, chronic sleep deprivation has been called 'the disease of our time'. Lack of sleep has been linked to increased risk of several heath conditions. Dr Robert Daniel is a Specialist Ophthalmologist with training in Human Physiology and Neuroscience in South Africa..