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(2022·天津南开3月模拟)
Are you the type to run before breakfast in the morning?Working out on an empty stomach won't hurt you—and it may actually help,depending on your goal.
Exercising before eating comes with the risk of feeling light-headed due to low blood sugar.You might feel tired or uneasy,and won't be able to work out as enthusiastically as you would have.A light amount of food is important for older adults over 55 before exercising—especially in the morning.But if your primary exercise goal is weight loss,exercising on an empty stomach may come with some promising benefits.There's some research to support the idea that working out in a fasted(禁食) state can burn more fat than exercising in a fed state.
Working out on an empty stomach,however,may also not prove true for everyone.“Some people advocate for fasted exercise,but these people tend to be young and in amazing physical shape,” says Douglas Paddon-Jones,a muscle physiology researcher and a professor of aging and health at the University of Texas Medical Branch.“They have no health problems,and what they're eating is of super-high quality and carefully regulated.” On the other hand,working out in a fasted state without proper planning or professional oversight may run the risk of unhealthy body composition changes.
For people who aren't athletes,fueling up with food before a workout may be the best way to get the most fat-burning benefit.“You don't want to fill up;you just want to give your body a burst of energy to power your training period.After you exercise,drink some water—but wait 60 to 90 minutes before eating,”says Shivani Sahni,director of the nutrition program at Harvard University's Institute for Aging Research.“You're trying to take advantage of your promoted metabolic(新陈代谢的) rate after exercising,so if you can go an hour or an hour and a half without eating,you'll maximize the fat-burning response,” says she.
1.Why does the author suggest exercising in a fed state?
A.To avoid being light-headed.
B.To lower blood sugar.
C.To burn more fat.
D.To work out energetically.
2.What's the meaning of the underlined phrase “fill up” in Paragraph 4?
A.加满 B.度过
C.吃饱 D.打发(时间)
3.Who may tend to practise fasted exercise?
A.Older adults.
B.Seniors beyond 55.
C.Professional athletes.
D.Good-shaped athletes.
4.What's Shivani Sahni's suggestion for people after exercising?
A.Developing a new lifestyle.
B.Finding a fitness instructor.
C.Going without food for a time.
D.Drinking salty water after exercising.
5.Which word best describes the author's attitude to working out in a fasted state?
A.Skeptical. B.Cautious.
C.Supportive. D.Subjective.
