Question

which principles are essential for designing a customized fitness plan? select all that apply.
variability
duration
frequency
mood

Explanation:

To design a customized fitness plan, key principles relate to exercise programming. Variability (adding variety to avoid plateaus), Duration (how long each session lasts), and Frequency (how often one exercises) are essential. Mood is not a fitness - plan design principle as it's more about emotional state, not exercise structure.

Answer:

A. Variability, B. Duration, C. Frequency