This episode covers practical cues that we use to be reasonably certain that workouts will have their desired effect, and tease apart the difference relationship between stimulus and adaptation. We give suggestions for the major training modalities including threshold and VO2max, plus strength and hypertrophy. We also discuss ways that these cues could be easily misused, plus the pros and cons of some other potential proxies like fatigue, power, heart rate, RPE, HRV, soreness, TSS, and more.