Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxic > Health-in-Motion 31 August 2016 We all need to sleep regularly We all need to sleep regularly. But why? One popular scientific theory has it that sleep evolved to allow connections (or synapses) between neurons in the brain to be pruned down, thus making room for the myriad of brand new memories that will accumulate during the following day. The idea received support recently when US scientists found that synapses in the brains of mice were 18 percent smaller after a period of sleep than they were before. Think of it as a natural and necessary process of mental housekeeping. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Fitness Unlock your best performance with these 4 mindset tips Lifestyle SEE: How many people smoke around the world? Diet and nutrition Chef schools compete to produce tasty R15 lunch box Medical New rabies test could save lives and revolutionise treatment Medical 7 mistakes that can impact your blood pressure reading Lifestyle ‘I tried haemorrhoid cream on my puffy eyes – here’s what happened’ From our sponsors Win a R1 500 hamper with Alpecin Hypertension Consumer Fact Sheet Understanding diabetes self-management WIN a R2000 Skin Renewal voucher! Live healthier Mental health & your work » How open are you about mental illness in the workplace? Mental health in the workplace – what you can do to help If you know that one of your colleagues suffers from a mental illness, would you be able to help them at work? Maligay Govender offers some helpful mental health "first aid" tips. Sleep & You » Sleep vs. no sleep Diagnosis of insomnia 6 things that are sabotaging your sleep Kick these shut-eye killers to the kerb and make your whole life better – overnight.