The Balance of Endurance and Speed

In a season ripe, there's two bread and butter qualities, depending on your athlete population you're working for. For me, it's like technical work, which is vr like the high school population wen yo're working at them. And then also, it's the season dependent. What type of training stimulus is the most important to never shy away from, right? Is it arobic power? That's more that sub a oalactic threshold type effort, running fast, but not too fast. Is it with an arobic laclytic power, with 800 meter runners? What is it? You never get away from bread and butter. But you can't just