Aerobic fitness, muscle strength, and flexibility are the main components included in an adult fitness test being introduced Wednesday by the U.S. Government. The test will feature several of the exercises done by millions of students each year as they strive for a Presidential Physical Fitness Award.

The new test for people 18 and older who are in good health was developed because baby boomers kept asking whether there was a physical-fitness test available similar to the ones they took as students, Melissa Johnson, executive director of the President's Council on Physical Fitness and Sports, told the Associated Press.

The aerobic part of the test consists of a one-mile walk or 1.5-mile run, while the strength tests include push-ups and half sit-ups. The sit-ups are done for one minute and the push-ups are done until a person can't do any more. A "sit-and-reach" exercise is used to measure flexibility.

Participants can enter their scores online and get results that show where they rank among people in the same age group.