| It increases the heart rate, makes muscles contract more forcefully and enhances the general state of alertness. |
| Isherwood's bright-eyed alertness, his lack of malice, his genial delight in the foibles of others all make him lovable. |
| The malnourished suffer from impaired health, reduced physical strength, diminished mental alertness, and high rates of infant mortality. |
| Because alcohol affects alertness, judgment, coordination, and reaction time, drinking increases the risk of falls and accidents. |
| The amino acids glutamine and tyrosine will improve concentration, retention and a sense of alertness. |
| Only during the first and last two hours of your waking day is alertness significantly impaired. |
