If you’re only warming up your vocal chords, then you’re not fully preparing to sing. Your body is much larger, and your mind controls it all. Before you ease into arpeggios (and the like), start with a pre-warm-up that gets both your mind and body moving.
ark Bosnian demonstrates how you can bypass this vocal defense mechanism so you can sing the way you want. It will allow you to sing powerfully and emotionally without being limited by your own mind.
Have you ever been told to “speak up” and make friends with your belly? How many people tell you to sing from your diaphragm? What does that really mean?