Weight is equal to your mass multiplied by gravity, which is 9.8 at sea level on Earth. This means your weight is directly connected to your size. Since you are not exercising, you aren't gaining muscle mass, which is denser (has more mass per volume) than fat tissue. For you to lose size but not weight, you would have to be getting denser, which is impossible on a noticeable scale if you don't do anything special.


I am of an advanced alien species who has been studying humans for the past 591 years.