Middle-distance powerhouse Oklahoma State practice gear-changing intervals and race pace simulations in this week'™s Workout Wednesday. The Cowgirls, including 2013 NCAA 1500m Champion Natalja Piliusina, look to qualify several athletes out of the West Region this weekend. Workout #1: 2x 150 buildup: 25.9 3x 200: 28, 30, 28 5 mins rest 500: 72.4 5-7 mins rest 300: 44 200: 30 100: 13.7 Workout #2 3X 600 BREAKDOWN, 3 min rest 1:49 (40, 36, 33) 1:48 (39, 35, 34) 1:5 (40, 37, 33)