Indeed, consuming a high dose of vitamin C is a popular way to increase your stamina and avoid influenza. On the contrary, you just need to sleep sufficiently because this is more effective than consuming vitamin C.

The newest study that is published by 'The Archives of Internal Medicine' journal shows that less sleeping is associated with the risk to get influenza. The experts even say that sleeping sufficiently is the most effective way to increase stamina.

A researcher from Max Planck Institute for Evolutionary Anthropology also shows that the species that sleeps more has the higher stamina to fight for pathogen as causal factor of disease.

It is a general knowledge that experts suggest people to sleep for 8 hours per day. If you cannot sleep as they suggest, you should give priority in sleeping quality, not sleeping quantity.

Even though many people today cannot sleep for 8 hours per day, they should not sleep less than 6 hours per day. And, it is not a big deal that you want to sleep in the night or at noon. It is known that sleeping is very individual.

If you want to know that you have high quality sleeping or not, you can measure it from what kind of feeling you feel after you wake up. Do you feel fresh when you wake up from sleeping?

Related to the difference of physiological sleeping naturally and physiological sleeping by medicine help, they are certainly different. They will result the different quality sleeping. However, the best sleeping is physiological sleeping naturally because you do not need to push your body to sleep. To get high quality sleeping, the key is self control.

Indeed, you can suffer because of a sleeping disorder. You will have bad sleeping quality and your productivity reduces as well. There are at least 5 kinds of sleeping disorders that people generally suffer. They are insomnia, middle insomnia, late insomnia, intermittent insomnia, and total insomnia.

You experience early insomnia if you sleep difficultly and you experience middle insomnia if you often wake up from your sleeping. Late insomnia happens to people who can sleep easily, but they wake up earlier and get difficulty to sleep again. Intermittent insomnia happens to people who often wake up and cannot sleep again until morning, while total insomnia is the condition when you cannot sleep at all.

You can experience sleeping disorder because of physical disease, mental disorder, like stress, worried, and depression, and medicines. To cope with sleeping disorder, you can do a therapy.

There are three therapies that you can do to cope with sleeping disorder. They are biological therapy, psychological therapy, and social therapy. Biological therapy includes causa therapy (the step where the causal factors of sleeping disorder are found and solved), symptomatic therapy (the step where the indications of sleeping disorder are analyzed), and combination therapy.

Related to therapy, the sufferers of sleeping disorder should be given non-addictive medicines. This medicine does not cause addiction and its working mechanism is new, so you do not need to worry that you become addicted on it and you get its side effects.

Meanwhile, physiological therapy includes supportive psychotherapy, re-educative and reconstructive therapy, cognitive, psychodynamic, behavior, and family psychotherapy.

Social therapy is done to cope with problems that can be causal factors of stress, like marriage, problems with family, interpersonal relationship, job, living environment, finance, and family factors.