Experiment: Measured Improv 1

Find a quiet space where you can sing and create other vocal noises. Set a metronome to 60 bpm and a timer for 5min. (If you don't have a metronome or a timer, you can get either one for about $15 each at a local music store.)
Improvise with your voice for a measure of 8 counts (eight beats of the metronome) then maintain silence for four counts. Try to sing a melody that is not known to you yet somehow resonates within you. (Don't worry about sounding good or even in tune. The ultimate purpose of this experiment is not to sound pretty.)
Maintain a theme (a continuing thread or story) from measure to measure. Keep track of the beats by nodding your head or tapping your fingers or your foot.
Continue this pattern until the timer sounds.
Take three deep breaths.
Wait until the next day before you try it again.