So now let's move to a discussion of the optimal timing for the Training Stimulus Application. The blue curve here is called the Supercompensation cycle. On the vertical axis is the athlete's Physiological functioning, and on the horizontal axis is Time. The orange line represents the athlete's current normal level of physiological functioning. Now after a warm-up, the training stimulus designed to produce a specific training effect is applied. And this sets the super compensation into cycle into action. There is a gradual decline in physiological capacity due to fatigue in conjunction with the disturbance in homeostasis, and we've talked about this. And this is Phase 1 of the Supercompensation cycle. Phase 2 occurs as soon as the training session ends, during early recovery while homeostasis is returning back to normal baseline. And Phase 3 is the training effect phase or super compensation phase, where adaptation takes place. A decay occurs in Phase 4, if there is no additional training stimulus. Okay, so here's the question. Where on the supercompensation cycle do you apply the next training stimulus? Do you think it is at point A, point B, or point C on the supercompensation curve? Well, let's take a look at the answer. Let's assume you're attempting to develop a newcomer's endurance capacity. And the training stimulus is a three mile run at a comfortable pace. A beginning athlete will find this workout difficult because their body is not built to handle this increased load. As a result the structures that are quickly stressed. And this stimulates the fatigue effect. During recovery, things return to normal and after about 24 hours, the body has built stronger structures. More enzymes, stored more fuel components etc, that is, super compensation occurs. At this point, the athlete runs a second three mile training session at the same pace, and this is stimulus number two. Again, the familiar super compensation cycle of fatigue, recovery, and super compensation occurs. The athlete probably won't notice too much difference in effort during the second run. Because the body has only made itself slightly more physiologically efficient. However, the run may appear a wee, wee bit easier. The third training run is stimulus number three, and produces the same super compensation cycle. And then the fourth training stimulus occurs, followed by yet another super compensation cycle. Now the workout will seem quite a bit easier. Then there is another training stimulus and another supercompensation. And the yellow line will show how the physiological improvement occurs when the same training stimulus is consistently repeated. In this example, by the fifth training session, the athlete's body has completely adapted to match this training stimulus. And this is where you see the plateau. In other words, further use of this training stimulus will not result In any more adaptation. The athlete will simply maintain this new level of physiological functioning. A new stronger stimulus is now needed. Now this is just an example. A number of training sessions for complete adaptation to a three mile run training stimulus will vary from athlete to athlete. A good rule of thumb is that it takes four to six weeks to fully adapt to a training stimulus, depending on the training age of the athlete. We still haven't answer the question, but we're getting there. Let's continue to explore other training stimulus timing options.