[월요일] 2km × 4 Sets Rest 2 min Set 1: 2km @ 10K Pace(4:20) Rest 2 min Set 2: 2km @ 10K Pace(4:20) Rest 2 min Set 3: 2km @ 10K Pace(4:20) Rest 2 min Set 4: 2km @ 10K Pace(4:20)