I have two questions related to my experience. I don't know whether others experience it too. 1. Sometimes when I exert (force) with maximum capacity for an interval of time, I see Silver/Blue coloured moving micro-organisms in air. I feel slight dizziness at this time and this usually happens when I'm exhausted. What are they actually? 2. Whenever I keep a finger pointed between my eyes (very close to the skin) with eyes closed, I feel a different kind of sensation (some sort of pain). What is its origin?