Sleep experts now came to the conclusion that the duration of sleep determines very much our entire life. Sufficient sleep has a significant influence on diseases that are particularly typical for our time, such as cancer, Alzheimer's, diabetes and others. From this, the recommendation is derived to sleep at night regularly and as far as possible not less than seven hours.
But human beings "should" be "aware" of their animal heritage and say clearly that at least traditional rational thinking can very easily cover only part of the problem. Where is the horizon difficult to look beyond? Anyone who is ready to follow a modern Middle Way proposed here will soon realize that even today there are often forgotten or repressed further areas, which may be just as important, but without opposing anyway rationality and the thereby associated "cognition and processing".
The life span of ravens in nature is about 20 years, but can be increased in captivity to 80 years. The average life span of people in prehistoric times was likewise well below 30 years, and individual cases of 80 years old people only rarely happened with highly honored alleged wise men therefore likely to live in quiet conditions.
The difference between static and dynamics, already highlighted on this website, could also immediately bring clarity into the situation. Life is not a smooth process, but runs, at least under natural conditions, sometimes with a highly variable intensity. However, the perceived lifetime is not simply the duration measured in standard time units but the intergral life experience over the period in question. Those who live more intensively, therefore, do not simply run into the danger of living shorter, but perhaps have the same long-term life experience.
Our average or supposedly recommended sleep time is almost inevitably connected with it. Those who live very intensively will not necessarily behave differently during sleep. In both the animal and prehistoric areas, it was certainly not as deep and profound as nowadays, because this was simply too dangerous. You could be attacked in your sleep and be quickly transferred to the hereafter. This is no longer the case, but surely today still selective influences of the most diverse, but to us not always conscious kind play a role. Darwin continues to have its significance and may cause us when following modern dynamics to perhaps sleep shorter than the seven hours recommended under static conditions.