The diet of the traveler

Excitement of the new experiences, long ways, hikes, heavy bags always makes you hungry. And you have to be energetic and healthy to enjoy your journey.
For the Professional Poor Traveler the richest food is the healthiest food! There are some cheap and healthy solutions...

 It is not a beer, It is yoghurt!

Yoghurt is a good source of protein. In fact, an average 150-gram serving provides approximately 20 per cent of the Daily Value for protein. It keeps you satiate longer than you expect.  Research shows yoghurt strengthens and stabilizes the immune system. It is important cause you can't be always hygienic on long journeys. It should be included in your traveler's diet at least once per day. But if you don't like the taste of yoghurt there are some ways to disguise it (see this link)
As you probably know the main food of the PPT is conserve-canned food. But they contain toxins and yoghurt is the best thing to balance your body from it and feel better.

Honey

Honey is perfect for the breakfasts with some bread and yellow cheese. It is cheap since you can eat one jar of it from 1 to 2 weeks. The glucose in honey is absorbed by the body quickly and gives an immediate energy boost, while the fructose is absorbed more slowly providing sustained energy. Also honey’s antioxidant and anti-bacterial properties can help improve digestive system and help you stay healthy and fight disease.

Do not avoid consuming vegetables and fruits. It ll keep your mind and body fresh! Summer times it is easy to find some fruits on the trees and some berries on the forests. Even if you are not hungry always take the food with you when you find it. You ll need it soon, or it would be nice to share with people you meet on your way.

It would be useful if you improved your fishing skills. And taking a course to learn what kind of mushrooms are edible might be very helpful too. (I am working on it at the moment)

 

You have to be very patient for fishing

And here is a simple test of your health status; Certain colours of your urine can indicate problems, diseases or imbalances in your diet. Since the normal colour of urine is pale yellow, variations can be an indication of health problems or be the result of certain foods that have been eaten.
Clear urine;
If a person has been drinking an excess of water or diuretics such as coffee or beer, the urine may have little or no color. Typically, it is nothing to worry about if it happens occasionally.
Yellow urine;
Excess sweating could result in the urine becoming a deeper yellow. Also, it is a sign that you have not been drinking enough liquids
Dark yellow urine;
Liver problems or jaundice can cause the urine to become consistently a dark yellow color. Be sure you have been drinking enough fluids before jumping to conclusions.
Orange urine:
People who eat too many carrots--like from a juicer--may see orange urine. Also, too much Vitamin C can turn the urine orange.
Greenish urine;
A urinary tract infection, bile problems and certain drugs can cause the urine to turn greenish. A brighter green colour is an indication of an excess of B vitamins.
Blue urine;
Urine with a bluish tint can be caused by a psuedomonas bacterial infection. It can also be an indication of high levels of calcium.

References;
1, 2, 3, 4