son obssessively pushing his belly in and out

[Guest guest]

My son (8 in jan.) just started pushing his tummy in and out and now

he is doing it obssessively. About a week ago, I told him he couldn't

eat anymore because his belly was sticking out and he looked in the

mirror and sucked it in. He has been sticking his belly in and out

now all week - hundreds of times a day. I am worried it is a tic and

have given him a reward if he stops it, but he can't seem to stop.

Is this a tic? I am very worried.

brandi