We all know that alcohol and tobacco can cause us harm and that sport and a healthy diet are good for us. But there are additional day-to-day habits that we also automatically think of as healthy without ever thinking that it might not be the case.
We decided to find out where our ideas of what constitutes a healthy habit turn out to be mistaken.
Quite often we hear the advice that you should brush your teeth after every meal. But you actually shouldn’t brush your teeth this often under any circumstances. This is especially true if you’ve very recently eaten something sweet or acidic. The enamel of your teeth, softened by the acids, will now be more vulnerable to harm from the abrasive components of the toothpaste.After eating, it’s best to simply rinse your mouth out with mouthwash or water. If you want to clean your teeth with toothpaste, wait at least half an hour.
Many people think that the more we sleep, the more our body is able to rest. But, in fact, oversleeping can be just as harmful as undersleeping. One professor from the Center for Sleep Research believes that more than eight hours of sleep can lead to failures in the work of the brain, as a result of which an individual can feel sluggish and will think more slowly.An adult should sleep for around eight hours — it’s in this amount of time that the body can successfully restore itself. If you find yourself wanting to sleep more than this on a regular basis, it’s worth carrying out a medical examination. Sleepiness can be one of the signs of a chronic disease.
Research carried out in Japan has shown that using an alarm clock not only upsets our biological rhythms but can also cause harm to the heart. A person’s blood pressure rises when they’re woken up by an alarm, placing them into a «battle ready» state for a moment — this is never good for the body.If you really don’t have the time to wake up naturally, and going to bed earlier isn’t possible, then for the sake of your health it’s worth finding an alarm that wakes you up gradually rather than suddenly.
Ophthalmologists argue that cheap sunglasses do nothing to protect your eyes from ultraviolet rays.
When you look at a bright light, you’ll instinctively narrow your eyes in order to protect them from harm. If you’re wearing sunglasses, your eyes remain as wide as when they’re not looking at the light, allowing it to penetrate them to a greater degree. Cheap sunglasses don’t have an effective protective layer. So they not only fail to protect your eyes from harm but actually subject them to greater risk than if you weren’t wearing them.