Final answer:
The time between the first and second tests in an APFT should be at least 10 minutes to allow for recovery and accurate assessment of physical fitness.
Step-by-step explanation:
The time between the first and second tests in an APFT (Army Physical Fitness Test) should be at least 10 minutes.
This allows the soldier to recover and have a more accurate assessment of their physical fitness. Taking the two tests too close together may result in fatigue, which could affect the soldier's performance.
For example, a soldier could take the push-up and sit-up tests, rest for 10 minutes, and then take the two-mile run test. This time interval ensures that the soldier has adequate recovery in between the different components of the APFT.