Traveling? So, for nomads, they never have to fast?
I am not sure about nomads, but when traveling on a long flight with my granddaughter and her best friend from college who was a pious Muslim from Pakistan, she was eating meals, and when I questioned her, she said it was because she was traveling.
and some of our Muslim ER doctors in the states would not eat, but others did eat, pointing out that caring for the sick was more important than fasting.
Much of Islam, like much of Christianity, is quite lose on the small points of the law for ordinary folks: Until you get a religious revival, and you get inquisitions and worse for those who bend the rules.