Strenuousness
Strenuousness is the degree to which an activity requires substantial physical or mental effort. It is a relative measure, varying with an individual's fitness, experience, and motivation, and can describe tasks ranging from intense workouts to demanding cognitive work.
In physical activity, strenuousness is often characterized by intensity, duration, and pace. Quantitative tools include metabolic
Factors that influence strenuousness include load or resistance, terrain or environment, technique, energy reserves, fatigue, acclimatization,
Outside sport, strenuousness applies to work tasks, daily activities, or rehabilitation, where high strenuousness may raise
The term derives from Latin strenuus, meaning active or energetic, and has been used in various fields