Great presidents are often stubborn and disagreeable, but also more extraverted, open to experience, and assertive. The study found that nearly all presidents could be classified into one or more of eight presidential types, with some belonging to more than one group.
SourceAmerican Psychological Association·DateAug 4, 2000
Deep breathing reduces adverse effects of methacholine on healthy lung function by 85%, potentially providing therapeutic options for asthmatics. The study suggests that deep breaths stretch lung tissue, releasing a protective chemical to keep airways open.
SourceJohns Hopkins Medicine·JournalJournal of Applied Physiology·DateAug 4, 2000