I know the feeling of suddenly being pooped. I usually go to class 3-4 times per week and usually have the yoga “high”, but I have had an upper respiratory infection for the last week and spent a week off. I went for the first time last night and it was like I had never been before!! I was nauseated, I thought my heart was going to explode out of my chest and get this–I was cold! It was a perfect Bikram temp–105 and i had chills and had to lay down for more of the class than I care to admit. I had plenty of water, rest, but does anyone have any solutions?