Final answer:
The typical body fat percentage for young healthy adult men is between 12 and 20 percent, measured using methods such as the skin-fold test.
Step-by-step explanation:
The percentage of body weight that is fat in young healthy adult men typically ranges between 12 and 20 percent. To measure an individual's fat mass, various methods can be used, with the skin-fold test being the simplest and lowest-cost method. A health professional uses a caliper to measure the thickness of skin on different parts of the body, which then is compared against certain standards to evaluate body fat percentages. Despite certain limitations, this is regarded as a noninvasive and fairly accurate method. It's important to note that body fat percentages vary with sex, age, and physical activity level.