text: This is complicated for a variety of reasons, but I won't go int o all of that. The thing is: Chicken is better than turkey unless you're trying to fall asleep. The tryptophan in turkey will make you tired. Pigs are extremely smart animals and they don't taste very good, so why eat 'em? Another fact about pork, is that it is marbled with fat, which means that it is worse for you than chicken. Birds do not have fat marbled into their muscle like most other animals do, if you take the skin off, chicken is nearly fat-free. They carry it only in their skin and in trace amounts in their bloodstream. Beef is not as healthy for humans to eat as chicken is, because beef is much higher in artery-clogging fat and cholesterol, so, nutritionally, chicken is the smarter choice. However, humans like variety and that means that beef is okay once in a while.