The term "leg day" refers to a workout session specifically focused on training the lower body, including quadriceps, hamstrings, glutes, and calves. The structure is literal, combining "leg" with "day" to indicate a dedicated training split. It is widely used in gym culture, often associated with intense and physically demanding workouts that are commonly avoided or joked about due to their difficulty.

英語での「leg day」の定義と意味

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