Alexa Efraimson's Speed Session on the Track

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