Just as people are different, so too are their sleeping habits. Some sleep long hours, while others manage with comparatively few. Not surprisingly, there are many popular beliefs about sleep that upon closer inspection turn out to be untrue. We’ve looked at several frequent sleep-related claims and confirmed their veracity – or not. Claim: You shouldn’t check the time if you’re having trouble falling asleep. True. Checking the time and calculating how many hours are left before you’ve got to get up is stressful, which is why the German Society for Sleep Research and Sleep Medicine (DGSM) says…