Our bodies are not symmetrical. Most people make more milk on the right and have a slightly larger left breast. Did you know even your nipples can be different sizes, shapes, and lengths? They may be positioned in slightly different places on your breast. This can sometimes make latching on one side more difficult than the other. You may also need to pump with different size or brand pump flanges to maximize pump comfort and output. Each breast can have a different flow, volume and TASTE of milk even in the same feeding or pump session. We also have hand preferences and can find it easier to latch on one side versus the other. Some times trying different positions or angles of bringing baby to breast can be helpful when practicing.