International Sports Sciences Association (ISSA) Trainer Practice Exam

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Master the ISSA Trainer Exam and take your fitness career to new heights. This quiz is designed to help you brush up on your knowledge and gain the confidence you need to succeed. Engage with various questions and insights that precisely mirror what you will face on the exam day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


The human body is composed of which two main components?

  1. Blood and Plasma

  2. Lean Body Mass and Body Fat

  3. Muscle and Bone

  4. Water and Electrolytes

The correct answer is: Lean Body Mass and Body Fat

The human body is primarily composed of Lean Body Mass and Body Fat, making this answer the most accurate. Lean Body Mass includes all the tissues in the body that are not fat, such as muscles, organs, bones, and water. This component is crucial for overall health, as it plays a vital role in metabolism, strength, and mobility. Body Fat, on the other hand, serves important functions, including energy storage, insulation, and protection of vital organs. Understanding the balance and significance of these two components is essential for evaluating one's health, body composition, and fitness levels. While options such as muscle and bone are indeed important components of Lean Body Mass, they do not encompass the entirety of it. Additionally, water and electrolytes are critical for various physiological functions, yet they represent specific aspects of bodily needs rather than the overarching structural composition. Blood and plasma pertain to the circulatory system and do not define the primary physical structure of the body itself in the broader context.