Thank you so much. I've been singing since I was a child and I've had several very good singing teachers throughout the years which has made an enormous difference. I don't have a regime as such but I think the key to sounding your best is effective warm ups. Lately I've been using a singing straw for singing exercises and this warms my voice up quicker than anything else. I can also reset my voice if I get tired by just humming through the straw for a few minutes. Maybe I'll do a video.