Something weird is going on in my brain, and I don't feel like my usual self. My sleep is fine as I'm getting 7-8 hours per night (though I'm sleeping between 10pm - 2pm). I'm doing intermittment fasting and eating fruits and veg more than ever did. Have been drinking 2 litres of water per day and don't take any supplements. I'm 20 btw and Idk whether if I'm supposed to be shocked by this or not, can't even focus properly when playing chess or sudoku.