Lip bubbling

Before you start to practice any exercises of singing, I would suggest you start with producing a lip bubbling, as long as you can. Meanwhile, use your hands to feel the energy and muscles involved in your front and back of torso (your body basically, esp your abdominal).

Now, enhance the boring lip bubbling with note. Means, combine the humming with the lip bubbling together. Hold the lip bubbling as long as you can. Then, start to sing a 'Ah', as long as you can. You shall feel the same energy and muscles involved as you're producing lip bubbling.

Give it a go!!