Best practices for meal prepping for fitness goals include planning and organizing meals in advance to align with specific nutritional needs. Start by determining caloric requirements and desired macronutrient ratios. Choose whole foods such as lean proteins, whole grains, and a variety of fruits and vegetables. Pre-cook and portion meals into containers to facilitate quick access during the week. Label containers with dates to ensure freshness and prevent spoilage. Regularly reviewing and adjusting meal plans based on progress will help maintain motivation and achieve fitness objectives effectively.