I'm not sure if I completely get this post. Are you saying that the amount of time when you cannot work is chaotic or not? If I get it correctly, you're saying that when you feel like you cannot work you can often look at various things that are going on (such as when you last had a meal, what time it is, whether you recently exercised etc...) and then use these factors to add an element of predictability into your down time. Is this right?