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Evolutionary Adaptation is the sole reason for sleep

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Introduction

Evolutionary Adaptation is the sole reason for sleep The evolutionary theory claims that there is survival of the fittest, which means that whatever characteristics we have are there because they are or were once useful. Meddis (1979 suggested that we have evolved out sleep patterns. This means that we sleep because it enhances our chances of survival. There is other research that backs up this idea of our sleep patterns being evolved for our benefit. For example, it has been shown that those animals that were in danger from predators did not sleep much. ...read more.

Middle

Another example is lions which have few predators and meet their food needs in short bursts; hence, are able to sleep longer hours. These examples, suggest that sleep patterns evolve to suit the situation, and lead to the most likely chance of survival for each species. An advantage of the evolutionary theory is that saying sleep is useful seems to be a sensible explanation. This idea fits with evolutionary explanations of other characteristics, for example, giraffes having long necks to reach leaves on high branches. The idea of survival of the fittest is widely accepted. ...read more.

Conclusion

The major strength of ecological theory is that it can explain why different species sleep at different times of the day because they stay awake at times for which they are better adapted, for example to hunt or avoid being hunted. Ecological theory can also account for the reduction of movement and sensitivity during sleep, since it views sleep as serving to keep animals still and quiet, thus reducing the risk of predation. Additionally, evolutionary theory can explain the reduction in cognitive activity during sleep; a thinking animal would be more likely to respond to stimuli and put itself at risk. Therefore, these advantages of the evolutionary theory suggest it is the sole reason for sleep. Hence, this motion must stand. ?? ?? ?? ?? ...read more.

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