ZeuSter

I think that Long Tones can be very beneficial in many ways .
First, they can be used to develop a very secure attack in all registers ,
They can also help in developing good breathing as it is coordinated with the initial attack.
They are also beneficial for breath control as it relates to dynmanic
contrast. And last, but not least they are excellent for developing endurance .
The type of Long Tones I am referring to are the old fashioned kind where you start very soft and crescendo to forte and then back down, in 16 counts. Long Tones must be practiced very carefully, and in the correct manner so
you will receieve the most benefit from them. You should rest a lot when you start out practicing Long Tones , don't over do it. Start softly in the low register and work up chromatically, resting often , take your time with each tone.
Be patient and you will see results.