Which word best describes a "vigorous" workout?

• A. Easy
• B. Strenuous
• C. Relaxing
• D. Mild

Answer: (B)

A "vigorous" workout is characterized by intense physical activity that requires significant effort and energy. The term "strenuous" perfectly captures this essence, as it refers to activities that demand a lot of physical strength and stamina. In the context of exercise, a vigorous workout typically involves high heart rates, heavy breathing, and a challenging level of exertion, which aligns with the definition of strenuous activities.

On the other hand, terms like "easy," "relaxing," and "mild" imply a much lower intensity or effort level. These words suggest workouts that are comfortable, low-stress, or not particularly challenging, which stands in stark contrast to the idea of a vigorous workout. Thus, "strenuous" is the most fitting descriptor for the intensity associated with a vigorous workout.