What is the duration and timing of healthy sleep? An old folk wisdom says that it is better to sleep before midnight than after. But scientists have proven that the timing of healthy sleep is not as important as the number of hours of deep sleep, which is the first five hours of sleep, whether before or after midnight. The old popular saying “sleep before midnight is best for health” dates back to a time when people used to go to sleep at the same time as the chickens, several hours before midnight. However, that changed a long time ago,…