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 Updated 12 February 2018 To us, our sense of hearing appears to be constant. To us, our sense of hearing appears to be constant – it’s always “on” and the same in both ears. Not so, say collaborating scientists from Italy and Australia whose research indicates that the strength of our hearing goes through highs and lows at rate of about six per second, even though we are not consciously aware of the process. What’s more, these oscillations vary between the right and left ear – first the one hits its highest sensitivity and then the other in a never-ending cycle. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Lifestyle Here’s why your leg cramps while you sleep – and how to treat it Lifestyle This is how Viagra can help you live longer Lifestyle Why women are opting to get their virginity restored through hymenoplasty Parenting Does mom's dagga end up in breast milk? News SEE: This surprising group is at risk of getting Listeriosis Medical A quick guide to sinus-related congestion 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.