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 Diet and nutrition How to get the most out of your vitamin and mineral supplements Diet and nutrition It's cheap, and people are drinking it daily - but this doctor has sounded a warning on traditional beer Diet and nutrition WATCH: Some plant-based burgers may not be as healthy as they seem, say nutritionists Diet and nutrition 7 tips on how to eat more mindfully Parenting Newborn's gut 'microbiome' could give clues to weight later Medical How to keep your bladder happy – and prevent future incontinence Live healthier Heart health » 5 women share exactly what it feels like to have a heart attack 'I felt like I had a pill stuck in my throat.' Diet & Nutrition » 8 benefits of gherkin juice that will make you want to drink some ASAP Goodbye, salt craving.