[9급 지방직 영어 2017년 9번]

Whether you've been traveling, focusing on your family, or going through a busy season at work, 14 days out of the gym takes its toll―not just on your muscles, but your performance, brain, and sleep, too. ① Most experts agree that after two weeks, you're in trouble if you don't get back in the gym. “At the two week point without exercising, there are a multitude of physiological markers that naturally reveal a reduction of fitness level,” says Scott Weiss, a New York-based exercise physiologist and trainer who works with elite athletes. ② After all, despite all of its abilities, the human body (even the fit human body) is a very sensitive system and physiological changes (muscle strength or a greater aerobic base) that come about through training will simply disappear if your training load dwindles, he notes. Since the demand of training isn't present, your body simply slinks back toward baseline. ③ More protein is required to build more muscles at a rapid pace in your body. ④ Of course, how much and how quickly you'll decondition depends on a slew of factors like how fit you are, your age, and how long sweating has been a habit. “Two to eight months of not exercising at all will reduce your fitness level to as if you never exercised before,” Weiss notes.