True or False: About 98% of the human body is composed of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorous.

The statement is true because approximately 98% of the human body is indeed composed of the six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. These elements are essential for life and play critical roles in various biological processes.

Oxygen is vital for cellular respiration, enabling energy production; carbon serves as the backbone for organic molecules; hydrogen is involved in energy transfer and redox reactions; nitrogen is a fundamental component of amino acids and nucleic acids; calcium is crucial for bone structure and muscle function; and phosphorus plays key roles in cellular energy transfer through ATP and in the formation of DNA and RNA.

Understanding the elemental composition of the human body is important for grasping the basics of human biology and how these elements contribute to physiological functions and health. This foundational knowledge is essential for anyone in the field of personal training and fitness, as it influences how we approach nutrition and exercise recommendations for optimal health.