How do the nerves work? of the nervous sytem

How could you find out if that advice is based in scientific evidence?

What type of breathing, also known as balanced breathing, makes the respiratory rhythm more regular, which in turn has a soothing effect on the entire nervous system?

In a search a driver needs to look in a of distances far away to near, as well as to the left, right and rear of the vehicle, making efficient use of both central and fringe vision. a) fast manner b) systematic manner c) slow manner d) aggressive