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 28 September 2016 Everyone needs a good eight hours of sleep per night, right? Everyone needs a good eight hours of sleep per night, right? Well, actually sleep researchers don’t really know exactly what the optimal amount of sleep is, but most experts recommend that adults should aim for at least seven hours a night. Studies suggest that any less than that on a regular basis may increase the risk of heart disease, obesity, depression and early death. Sadly, surveys have shown that many people around the world routinely operate on less than seven hours, probably to the detriment of for their long-term wellbeing. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Diet and nutrition ‘I lost 9kg by making one simple change – here’s what I did’ Medical Going for an op? See what your anaesthetist is really doing Lifestyle Tired of wearing underwear? Here are 6 things you should know before you go commando Sex Are sex robots healthy for humans? Lifestyle This breathing exercise will get you to hold your breath for over two minutes Fitness Meet Gareth Scott, the gamer breaking stereotypes by helping others get fit From our sponsors Congestion associated with sinuses can ruin your day Tell us of your unusual allergy and stand a chance to win R2 000! WIN a R2000 Skin Renewal online store voucher! FLU SURVEY: Stand a chance of winning R2 000 cash! Live healthier Incontinence & You » When should you see a doctor for urinary incontinence? Incontinence and your sex life Treating incontinence Here’s how to train your bladder You train to increase your physical fitness. So consider training your bladder too; it may decrease your chances of developing urinary incontinence when you are older. FYI: Cancer » Could a blood test spot lung cancer early? Many breast cancer patients can skip chemo, big US study finds Do you know what causes cancer? Wrong ideas about what causes cancer can lead to unnecessary worry and even inhibit good prevention and treatment decisions.