In the context of fitness training, what does 'Intensity' refer to?

Intensity in the context of fitness training specifically refers to the effort level during exercise. This means how hard a person is working at any given moment during their workout session. It can be measured in various ways, including heart rate, the amount of weight lifted relative to a person's maximum ability, and perceived exertion. Higher intensity typically results in greater cardiovascular and muscular benefits, pushing the body to adapt and improve its overall fitness level.

When discussing duration, type, or frequency of workouts, those aspects pertain to different components of a training program. Duration relates to how long an exercise session lasts, type refers to the specific exercises chosen (e.g., strength training, aerobic cardio), and frequency addresses how often workouts are performed over a given period (like per week). While they all play a role in a well-rounded training program, they do not define intensity, which is solely about the effort exerted during that workout.