For someone who is constantly on the move and who eats and sleeps in various places, rudraksha is a very good support because it creates a cocoon of your own energy.
You might have noticed that when you go to a new place, sometimes you can fall asleep easily, whereas in certain other places you cannot fall asleep even if you are physically tired. This is because, if the situation around you is not conducive to your kind of energy, it will not let you settle down. For sadhus and sanyasis, places and situations could trouble them because they were constantly moving. One of the rules for them was never to put their head down in the same place twice.
Today, once again, people have started eating and sleeping in different places because of their business or profession, so a rudraksha can be helpful.