Coming a bit undone on Day Four of my detox

The headache comes and goes - sometimes just a tug on the temples, sometimes a vice around my forehead.  It's part of the detox process, of course.  It's my third day without solid food and, actually, that part of it is absolutely fine.  But I'm realising, more and more, that I'm too uptight for words.  I sit by the pool and find myself fidgeting within minutes. I lie on my bed and realise that my shoulders are locked and my arms are so rigid it's as they're clutching some...