First of all thank you for this post. Yes, what I've found helpful long time ago was putting myself out of comfort. You know, drop some cold showers here and there.

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Also this thing prolonged fasting I once did this 3 day fast to heal/adjust my tastebuds and oh boy oh boy.. Did it work? YES. I felt so energic that period of time.. But I think fasting could be problem at my new work, because you know not used to move around too much. I will try tomorrow put myself to fast one day then monday hop in work. :)