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 23 January 2018 Sleep is vital for the process of memory formation. Scientists have known for some time that sleep is vital for the process of memory formation. Recently, British scientists have demonstrated that while asleep, the brain doesn’t simply 'overwrite' multiple memories of a previous experience, but actually generates, stores and strengthens both the old and new versions alongside one another. "In this way, sleep is allowing us to use our memory in the most efficient way possible, enabling us to update our knowledge of the world and to adapt our memories for future experiences," explains lead researcher Scott Cairney. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news News SEE: This surprising group is at risk of getting Listeriosis Medical A quick guide to sinus-related congestion Fitness The genius ab exercise that all gymnasts use, but everyone else ignores News SEE: 6 body parts that can alert you to major health problems News Most SA claims are for this dread disease News Med stockout crisis cripples North West From our sponsors WIN a R2 000 beauty voucher! Understanding diabetes self-management Fed up with the Phlemings? Let’s chat diabetes and erectile dysfunction Live healthier FYI » When the flu turns deadly Why the flu makes you feel so miserable Could a deadly flu strain hit SA this winter? Following an intense flu season in the US and UK, should we be worried about our own upcoming flu season? Alcohol and acne » Dagga vs alcohol: Which is worse? SEE: Why you are drinking more alcohol than you realise Does alcohol cause acne? Some foods can be a trigger for acne, but what about alcohol? Dermatologist Dr Nerissa Moodley weighs in.