What does the "I" in FITT represent?

The "I" in FITT stands for Intensity, which refers to the level of exertion or effort that an individual puts into their exercise routine. Intensity can greatly impact the effectiveness of a workout, influencing factors such as cardiovascular endurance, strength gains, and overall fitness improvements.

When determining the appropriate intensity for a workout, it can be measured in various ways, including heart rate, perceived exertion, or the amount of weight lifted during strength training. Tailoring the intensity to the individual's fitness level and goals is crucial for achieving desired outcomes, such as weight loss, muscle gain, or enhanced endurance. Understanding intensity is essential for constructing a balanced and effective fitness program, which is why it plays a vital role in the FITT principle, alongside Frequency, Time, and Type.