In order to have the best air flow and therefore the best sound, you need to have good posture. This goes for when you're both sitting and standing. Imagine a line at the top of your head, through your back, holding you up.  If you're standing, keep your feet flat on the floor, shoulder width apart. Balance equally on both legs. Keep your head up and shoulders back. Every part of your body should be in the same line. If you're sitting, follow the same recommendations as you would for standing, but also keep your back off the chair, sitting towards the edge of your seat. Most people have a bad habit of only using the top of their lungs. Doing this though doesn't employ the diaphragm and doesn't let you use your full power. If you are tense at all while breathing, it will resound in the muscles of your vocal folds. Breathe normally, but be conscious of keeping your shoulders low and your chest relaxed. Concentrate on breathing lower staying loose throughout your core. If you need to, place a hand on your stomach to remind yourself that that's the part that should be moving up and down -- not your chest and shoulders. Hold an "s" sound (like a hiss) when you exhale to control the amount of air that you can expel. Any tension at all will keep you from your best sound. Your jaw is the instrument your voice comes out of -- you have to take care of it, too. The best place to sing from is your diaphragm, so stick it out to breath there. Massage your cheeks with the heel of each hand. Push in and down right below your cheekbone and rotate in a clockwise motion. Your jaw should open without you even thinking about it and be forced to relax. Do this several times. Ice cold water will limit muscle function in the throat, while very hot water can cause those muscles to relax too much and swell the mucous membranes in the pharynx. It's also best to avoid caffeine and nicotine, too. All these things constrict your throat and keep you from sounding your best. Warm teas or room temperature water are your best bets. You definitely want your vocal cords to stay lubed up, but you don't want to freeze or scorch them! If you do choose tea, make sure it's not scalding hot.
ابقَ في وضعية جسم جيدة. تنفس بعمق. حرر فكك. اشرب سوائل ساخنة.