What is a primary disadvantage of Fartlek training?

Fartlek training, which translates to "speed play" in Swedish, involves varying speeds and intensities throughout a workout, combining continuous running with intervals of faster-paced efforts. One of the primary disadvantages of this type of training is that it requires a high level of motivation to maintain the intensity.

During a Fartlek session, individuals must self-regulate their pace and effort, deciding when to speed up and when to recover. This self-directed approach can be mentally challenging, especially if a participant is not accustomed to pushing themselves or managing their effort effectively. Without a coach or structured environment, the temptation to settle into a comfortable pace rather than engaging in the intended variation can lead to underperformance and reduce the effectiveness of the workout.

This aspect of motivation distinguishes Fartlek training from more structured forms of interval training, which often have defined rest and work intervals that can help guide participants and maintain their effort levels. Thus, the need for personal initiative and willingness to vary intensity makes high motivation a critical factor in successfully implementing Fartlek training.

The other options do not capture this unique aspect as clearly; for instance, while Fartlek training can indeed vary in intensity, it does not inherently have low intensity throughout. It is also widely applicable to