hey guys, around september of last year i started taking voice lessons to help strengthen and improve my singing. my routine consists of going through a warmup/exercise tape for about 75min and then a break before working on songs using my natural voice but i would like to start working more on extreme metal type vocals. does anybody have any advice on practising them without blowing my voice out? in toying with them before i found that i could only go for so long before i lost my ability to distort my voice. what are the keys to gaining endurance without tiring my voice. should i be starting with quieter vocalizations to get my voice accustomed to the demands before increasing volume or should i just rely on lots of breaks and lots of water? my teacher told me in my first lesson that this style of singing is bad for the voice and even damagingin the long term but i think shes just a little biased. when i hear lots of my favorite singers i notice that their vocals get better and stronger with every new album(eg. michael ackerfelt, peter tatgren, speed strid, the almighty dev)
as for "extreme agressive vocals" just think about the people you hate

but KNOW your limits ^.^
*disclaimer*
i have never sung in my life, disregard the above statements.
except this one
and this one
and this one
and this one
and that one
and that one
and that one....