thts gud. ur bub is growing and he is soon gonna discover many new things. get ready for new surprizes every day.

Its normal, don't worry.

Ya.. its normal.. no worries.. my baby started humming when feeling sleepy.. the pattern of sleep changes with time to time

hehe...me too...few months ago was thinking the same....my son used to shout n laugh whenever he is sleep<u>y</u>... its normal... but doctor told me to stop as his throat gets dry n he coughs... its still going on n m trying to stop it...

no dear..infect they enjoy different sounds..all babies do the same..