The core tenet of chiropractics is that "life force" flows through the spine and "blocks" in that is what causes diseases/pains.
Most people think they are some kind of spine experts, while in reality it is nothing like that and more like concepts of Chi and meridians.
The thing is, a lot of chiros don't delve into that crap, because it's such obvious bullshit, but some do and will tell you in all sincerity that cracking that L6-8 might just kill your cancer.
These two meals kept me more or less healthy as a student, even through "omg I have 10 eur to last me 2 weeks".
Lentils and rice form complete proteins when eaten together. Lentils are a staple, and very cheap. They should be bought dry. Look for Indian recipes for daal for inspiration, or just cook with some broth and fry up some garlic and onion to throw in at the end.
Fill up a casserole with potatoes to boil, but leave some room on top, use a lid and don't fill up water so it completely covers your taters. Mackerel wrapped in aluminium foil with some aromatics inside like bay leaves, lemon slices if you're not a fan of fish. Place the fish on top of the potatoes when there's 25 min left on them. This dish also consumes very little electricity, but most importantly it will provide you with plenty of omega 3, vitamin d and all macros you need. Super important for those who live places where you get little sunshine through the winter months!