Yeah I have noticed this for a while. It's like the brain is working on different sections of the mind/CNS at different intervals. Reminds me of how my body recovers after a workout: if I lift chest and back on the same day my chest will be sore the first day and then my back will be sore the next. Heals in portions, thus, I feel various symptoms in various parts of the difficult "waves" of withdrawals. For me, it's all cyclical. And very predictable. **Added some stuff to clarify.