| In colder temperatures, the heart tolerates less exertion because the body reacts to cold by constricting small arteries. |
| Silently they washed and dressed, feeling languid and heavy from physical exertion and lack of sleep. |
| The inhibitions disappear and the red face is a result of happy exertion rather than excruciating bashfulness. |
| Lactate, your body's buffering agent, neutralizes the acid that builds up in your legs and makes them burn during heavy exertion. |
| In what was in reality a warm-down for her earlier exertion, she won that race by nearly a minute. |
| It wasn't exertion that left him weak-kneed and trembling, but rather the gut-wrenching horror of Joe's scream and his pleas for mercy. |
