疲勞是人們向醫(yī)生、朋友和親屬最常抱怨的問題之一�，F(xiàn)代疲勞癥的原因各種各樣，只是很少與過量的體力消耗掛起鉤來。相對(duì)人數(shù)不多的整天從事重體力勞動(dòng)的那些人幾乎從來不抱怨勞累，也許因?yàn)樗麄冾A(yù)料到會(huì)感到疲勞。今天，醫(yī)生報(bào)告說，疲倦更可能是由于活動(dòng)不足所致，而不是活動(dòng)過量所引起的。其實(shí)，增加體力活動(dòng)常常是為治愈人們體力衰退所開的一個(gè)藥方。

　　Fatigue is one of the most common complains brought to doctors, friends and relatives. The causes of modern-day fatigue are diverse and only rarely related to excess physical exertion. The relatively few who do heavy labor all day long almost never complain about being tired, perhaps because they expect to be. Today, physicians report, tiredness is more likely a consequence of under-exertion than of wearing yourself down with over-activity. In fact, increased physical activity is often prescribed as a cure for sinking energy.