Dr Medarov said it might be possible to use relaxation techniques and other types of therapy to modify lung function circadian rhythms.

BBC: NEWS | Health | Lungs 'best in late afternoon'

Dr Medarov said circadian rhythms of lung function may also have implications for the administration of asthma medications and the timing of medical procedures.

BBC: NEWS | Health | Lungs 'best in late afternoon'

In the hospital, in the course of being treated for the acute illness, people are sleep deprived, malnourished, deconditioned, disrupted in their routines, have their circadian rhythms jarred, medicated with drugs that affect judgment and function, and so on.

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