-- Posted by Anonymous at 4:11 am on Dec. 2, 2008 I have gained like 2.5kg over the past month!!! I havn't changed my eating / exercising habits or anything.. why am I packing on the weight?!   && How can I stop it!   -- Posted by evey the magnificent at 4:13 am on Dec. 2, 2008 How old are you? You're body may just be maturing. -- Posted by NEGATIVE0 at 4:17 am on Dec. 2, 2008 laziness. excercise. -- Posted by rawrr at 4:18 am on Dec. 2, 2008 Idk i gain and lose 5-10 pounds all the time, dunno why. -- Posted by L I F E S so G O O D at 8:48 am on Dec. 2, 2008 Chances are it is because you are spending more time sitting on you're ass then you do exercise. Start going to the gym. Another reason might be because your body is changing. How old are you? That has a good factor in this.