Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Epidural better than 'laughing gas' for labour pain > 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 in Newsletters Link between being overweight and our personal microbiome More: Daily Dose: Epidural better than 'laughing gas' for labour painHealth-in-Motion advertisement Other news Lifestyle Legal marijuana unlikely to tempt more kids Fitness Boosting muscle strength may improve memory Lifestyle Women catching up fast with male alcohol use Parenting Epidural better than 'laughing gas' for labour pain Parenting Infants should share parents' room to help prevent SIDS Lifestyle Blood for transfusion doesn't have to be fresh From our sponsors Keep an eye on your vision Which skin products are better, ‘medical grade’ or ‘over-the-counter’? Win 1 of 6 R5000 cash prizes Win a R2 000 Skin Renewal voucher Live healthier Exercise benefits for seniors » Working out in the concrete jungle Even a little exercise may help prevent dementia Here’s an unexpected way to boost your memory: running Seniors who exercise recover more quickly from injury or illness When sedentary older adults got into an exercise routine, it curbed their risk of suffering a disabling injury or illness and helped them recover if anything did happen to them. No relief for MS » Drug shows promise against MS in mouse study Vitamin D may slow multiple sclerosis Obesity in girls tied to higher MS risk Exercise may not lower women's risk of MS A Harvard study showed no evidence to support the idea that exercise lowers the risk of multiple sclerosis.