Nowadays most people, finance permitting, like to travel around the world, to see the wonders of different country.
It is true that in a different place, we can see many beautiful scenery and enjoyable to our life, to be remembered in our whole life.
In spiritual point of view, travel, is definitely good to our feeling, an absolute enjoyment to our inner heart, especially now the technical of photography so progressive that we can take very impressive scene in the photo which will be kept forever and be passed to next generation.
But, to the health point of view, it is harmful in every respect. When we arrive a new place, we eat different kinds of food which is tasty, of course, but, actually, those foods are full of chemicals to make it tasty. Our stomach will suffer after eating.
Therefore many people after returning from travel will feel uncomfortable. It is no problem to young people who will recover fatigue after few days sleep. Middle aged person will take longer to regain their health. But, to old people, it is extremely harmful. Many will be sick and need to be cured by doctors and some unlucky old people will die. As a rule, old person must not travel, but stay at home to spend their daily regular life for the best of their remaining golden days.