Final answer:
Muscular strength and size workouts do not need to last two hours or more and can vary depending on individual goals, fitness level, and intensity.
Step-by-step explanation:
No, workouts emphasizing muscular strength and size should not always last two hours or more. The duration of a workout depends on various factors, including individual goals, fitness level, and workout intensity. While longer workouts can be beneficial for some individuals, shorter, more intense workouts can also be effective in building muscular strength and size.