Dreams about measuring your body, such as your stomach, can often symbolize feelings related to self-assessment, body image, and personal growth. Using a sifter, which is typically used for separating or controlling the particle size of a substance, may suggest that you are trying to filter through aspects of your life or emotions.

This dream could indicate that you are evaluating your physical health, self-worth, or emotional state. It might also reflect concerns about how you perceive yourself or how you believe others perceive you.

Consider reflecting on your current life circumstances. Are there areas in your life where you're feeling the need to measure up or make changes? This dream could be prompting you to take a closer look at your self-image or to sift through your feelings to better understand your needs and desires.

Overall, take this dream as an invitation to explore your self-perception and any underlying emotions you may need to address.