Singing makes people fall sick?

Well ~
the story goes like this
I was actually singing in meetoto yesterday
forgothen how many round,
had i been singing
the only think i know is
i have lost my voice after all those singing...
OMG~
i a actually wondering
is it just me
or does other people fall sick after all those singing...
ok u could ignore me~
haiz...
anyway it kind of boring this days
nothing much to do
or should i say
i ve got things to do
just i m not in the mood to do it
[ps: it more on the lazyness wakakak....ignore me pls]