When you notice your mouth is dry, picture a lemon being sliced so that you can see its juiciness and pulp. Another tip is to take the tip of your tongue and let it lick the roof of your mouth 3 to 5 times and then swallow the saliva which has collected on the middle of your tongue. The third suggestion is to wear slacks or pants with large pockets and carry a half-pint of spring water. These small bottles can be purchased in plastic bottles with a collection of 4-6 for a reasonable price. Sip throughout the day.
Thank heavens we are not robots and unfortunately we have body parts that are not always in A one shape, even if we take excellent care of the body. With the body's adjustment to a change of climate which REALLY occurs April, May, and June, it is possible to not feel up to par. To answer this question, modify the "meat" of what you are saying and be sparkling for the introduction and don't apologize for being a human! Hints for the introduction:are to memorize that sparkling smile and the first sentence you say. Now you are considering how to comfort yourself during the presentation. Some possibilities are to have that favorite herbal tea if it is sinus related since it is very warm; have that fizzy SUGAR FREE carbonated water which can be very bubbly if your stomach is upset; have that flavored water if a joint hurts. Every time you take a sip, mentally say "I am helping these folk here in some way; I am average; with every sip I am getting closer to the end of this presentation."
Singing and speaking come from the same instrument and the purpose is to COMMUNICATE A MESSAGE. The singer who is not used to moving arms or head while communicating is not being a serious communicator. The WORDS need to be conveyed from the entire body/being of the singer. Before a song is sung, ask yourself "What do I want the listener to do or feel from the words of the songs?" Next, set the ATtitude - "at oneness with the message" with your hand/arm/shrug of the shoulder/body posture. If it is a song with many repetitions of the same melody, there must be a body movement. So many times the novice singer does not pick up this concept because when singers are filmed on TV, the cameras are doing the movements and blocking the viewer from seeing what the singer's body movements are doing. This is NOT ACTING in the sense you are insincere. This is BEING THE SONG.
Without seeing you and assessing you in person or over SKYPE, the problem is you are not moving your soft palate. It really is not that complicated. Tell your tongue to touch the roof of your mouth. As soon the area closest to the upper teeth has no ridges, that is the beginning of your soft palate. The rest of it in the back has a wiggly "U" hanging down which really lifts to create vocal variety. Try this exercise and do it 5 times with your eyes open and 5 times with your eyes closed. You are memorizing how it feels on the roof of your mouth. Say "hun-guh, hun-gee" pause and do it again. The back area of the soft palate will move for a "G" and a "K" swiftly. Whereever the "n" sound is of those two words, say your first and last name on the feeling. Also visualize your sounds are sitting on either side of a see-saw and move it up and down with the saying of your complete name.
A singer can overly belt so often and hold the high note so often with a straight, choir-boy light tone that excessive nasality in the voice begins. Using the voice for belting is just fine as long as voice exercises use flexibility and the full extremes of the singer's range BEFORE singing for that day. By using more "tummy" and "side ribs" support and singing on the beginning of the word's vowel formation, the excessive nasality leaves. I had a teenage client who was auditioning for a lead in a high school musical. The nasality in the song was gone by the 4th lesson. The client became the lead in 2016!