Feeling the same more and more. Feel my health deteriorating by doing this job. Part time awaits. The ugly truth is we humans were not designed to fly 3 days in a row. The noise, the air, the lack of opportunity for good meals and quality toilet time all contribute to fatigue and tiredeness whilst looking perfectly legal on paper. It's become the industry norm to throw you into an extreme block of duties only to then give you blocks of days off. I would much rather have a day off after each day of flying to recoup. The body needs it.