Answer:
The correct options are: heart rate, and sets/reps.
Step-by-step explanation:
The FITT Principle is a conjunction of methods used to prepare and execute an efficient workout routine. The name of this method is based on the components of its initials: F (frequency), I (intensity), T (time), and T (type).
Out of the options given by the question, the two that fit the most in this FITT Principle are heart rate and sets/reps, which are both important in the intensity component.
When taking into account weight training sessions, the amount of sets and repetitions is fundamental to achieve an intense workout. Depending on the goals of the person, the number of sets can vary from 3 to 5, and the number of reps can vary from 5 to 20.
On the other hand, when considering cardio sessions, calculating our heart rate is very important to realize if our workout is too easy or too hard for us. For example, a 25-years-old person should aim for a cardio session that puts their heart rate between 95 and 162 beats per minute.