All the precautions, in Spite of an infection with pathogens does not always prevent.

Especially in times of you can hope in the event of an infection only to a strong immune system that is able to keep the Virus in check.

in Addition, you can wear, however, in the run-up to make sure that immune system is strong and resilient for the case of cases.

A neuro-biologist explains why Sleep plays a particularly important role.

Weaker immune system due to lack of sleep

“of infecting viruses in our cells by binding to surface proteins and then your own molecules in a cell, inject. The result is that this body is reprogrammed to the cell of their own and self – starting, virus building blocks to manufacture”, explains Dr. Verena Senn, a neurobiologist and sleep expert, Emma-The Sleep Company, first of all, in principle, to the action of the virus.

“When this process is completed, dies the infected cell and releases the new viruses to infect other cells.”

Regularly, the body has to act against different viruses. Many, he quickly gets under control, he unleashes a kind of killer cells, the infected cells to detect at an early stage can be switched off, before more viruses are released.

The number of natural killer cells is essential for the body against viruses, to defend can.

sleep is an important prerequisite.

In one study, scientists were able to demonstrate that the proportion of natural killer decreased cells in the body by 70 percent, when subjects slept only four instead of eight hours.

“This is distinctive and is a significant appeal, to ensure adequate sleep,” warns the Doctor.

Every hour of sleep counts

sleep on stock is not possible – sleep is also very limited, says the sleep expert.

The world health organization (WHO) recommends seven to nine hours of sleep per night, and in the process, but there is no consistent recommendation about when you should go to bed.

Instead, every person has an internal, biological clock that will be synchronized by the day-night change on the earth again and again, says Dr. Senn.

naturally, one distinguishes, therefore, between “larks” and “owls”, so early risers and long sleepers.

long sleepers sleep, however, not really longer, but just only later, because they are night active longer and later go to bed.

For the immune system it makes no difference, as long as it still comes on a daily or nightly to the required sleeping hours.

“And a well-functioning immune system is the backbone of our health, it makes an essential contribution to the defense of viruses, as many studies worldwide, independently of each other to demonstrate”, says the neurobiologist.


  • Prather, A. et al. (2015): Behaviorally Assessed Sleep and Susceptibility to the Common Cold, archived from the original on 04.04.2020:

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*The contribution of “protection against the Coronavirus: Why good sleep is so important for the immune system” will be published by FitForFun. Contact with the executives here.