The phrase "sits one's butt" implies being inactive or sedentary. Antonyms for this phrase would include words that denote movement, activity, or action. These antonyms would include words like jog, run, exercise, walk, stand, pace, dance, hop, skip, jump, and move. Engaging in physical activity helps maintain physical fitness, mental alertness, and improves mood. Being sedentary for long periods of time can lead to health issues like obesity, diabetes, and heart disease. Therefore, it is important for individuals to engage in physical activity regularly and avoid sitting for prolonged periods of time to maintain a healthy lifestyle.