Improving by doing nothing

Its hard to fathom that on the day I did absolutely nothing represents the day that my overall conditioning improved the most.   Check out this diagram below:  

The body is amazingly elastic and can put up with a great deal of punishment, but over time, continued heavy workouts without breaks will break the body’s performance level. As the chart indicates, a workout results in the immediate degradation of the body followed by the eventual improvement if recovery methods are implemented properly.
No one knows this better than athletes using performance enhancing drugs.   These drugs are actually allowing for a fast recovery allowing an athlete to do more work.   That said I will do it the legal way by resting, eating properly and being properly hydrated.   I dont think that any athlete who is eating healthy should be messing around with supplements.