Alexa Efraimson's Speed Session on the Track

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Workout 4x300m (100m jog between each) 45.5, 47,7, 47.9, 48.3 400m jog 4x300m (100m jog between each) 47.5, 48.5, 49.3, 47.1 4x150m (100m jog between) 21.8, 21.9, 21.3, 21.4