Is it possible to overtrain using this technique?
after a 1 month break over the Holidays, I started back stage 2 with full force. Since then I've been exercising regularly. But in the last 2 or 3 weeks I doubled practice time and averaged about 10 to 12 hours of each week and last week I did't have a rest day at all.
Last Friday my voice wasn't up to par as I just couldn't belt out the highest notes with the usual brightness - it always came out very hoarse. My lower and mid registers were fine, but the hoarseness was always there when it came to stretch the upper mid voice. It always happened in the 3rd vowel modifications ("look" for the AA and AHs...) but never in the 2nd vowel mod ("loft" for AA and AHs or "eight" for EE). For the next three days, I rested my voice and did not exercise at all. My throat felt kinda soar, but not soar like a throat infection. It was more like I strained my throat muscles, and whenever I did my "look" vowel mod, I felt a little soar.
I think I now know what I was doing wrong: I believe I was raising my larynx inadvertently. Yesterday I exercised back again and I noticed that I had no hoarseness. After my workout I sang a few songs and I noticed that the highest notes were sometimes harder to sing. I remember Ken saying something about raised larynx being bad. So I the redid those songs and forced myself to flatten the tongue and keep my throat open and I could hit those high notes again!
So, back to my question: If I use proper technique, is it possible to overtrain and damage the voice?
I'm curious about what you guys think...