ISSA Personal Training Final Practice Exam 2025 – Complete Prep Guide

The "F" in the FITT principle stands for Frequency. This concept is critical in designing effective training programs, as it refers to how often an individual engages in physical activity or exercise within a given time frame, typically expressed on a weekly basis. Understanding frequency helps trainers to establish guidelines on how many days per week clients should work out in order to achieve their fitness goals, whether that means losing weight, building strength, or improving endurance. Frequency also plays a role in recovery and adaptation; it's essential to balance exercise sessions with adequate rest to prevent overuse injuries and enhance overall performance. This makes it a foundational element of the FITT principle, which, along with Intensity, Time, and Type, guides the creation of personalized and effective fitness programs.