Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Exercise lowers MS, 6 healthy choices for the weekend, Years before Zika vaccine, Teen girls respond to breast cancer risk > Health-in-Motion Updated 05 January 2016 Why you are losing self control Scientists have found that self-control relies on glucose as an energy source, and that when our glucose levels are low or cannot be mobilised effectively to the brain (i.e., when insulin is low or insensitive), we are more prone to losing self-control (overeating when you're tired?) The researchers found that when glucose was restored, subjects' self-control behaviours - such as controlling attention, regulating emotions, quitting smoking, coping with stress, resisting impulsivity, and refraining from criminal and aggressive behaviour - was improved. Then, ever wondered why you lose self-control after a couple of drinks? It's because alcohol reduces glucose throughout the brain and body, thereby impairing self-control. The glucose-self-control theory could also explain why many ex-smokers turn to sweets when they quit. 0 More in Newsletters Want to improve your teenager’s eating habits? More: Daily Dose: Exercise lowers MS, 6 healthy choices for the weekend, Years before Zika vaccine, Teen girls respond to breast cancer risk Health-in-Motion advertisement Other news News Health tip: Why can't I stop sweating? News ICYMI: The top stories of the week Medical Are your headaches linked to your thyroid? Diet and nutrition 6 healthy choices for the weekend Medical Years before Zika vaccine becomes available Sex Help, my STI is incurable! From our sponsors Win one of 25 Webers valued at R2000 each! How to still have a good life with diabetes Otrivin Menthol relieves sinus congestion Lose weight 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.