@JeremyECrawford If you suffer a 4th level exhaustion, then reduce the level by one, is your HP max still halved?
— Samual Engler (@BiiigSam) September 3, 2015
If your level of exhaustion is reduced, you no longer suffer the effect of any level that was removed. https://t.co/UUdMsHoQHd
— Jeremy Crawford (@JeremyECrawford) September 5, 2015