Final answer:
FITT in a fitness plan stands for Frequency, Intensity, Time, and Type, referring to the frequency of workouts, the intensity of each session, the time spent exercising, and the type of exercise performed.
Step-by-step explanation:
The acronym FITT stands for Frequency, Intensity, Time, and Type. These elements are used to structure an effective fitness plan. Frequency refers to how often exercise sessions are conducted, Intensity signifies how hard the individual works during exercise, Time indicates the duration of the exercise session, and Type denotes the kind of exercise performed.