No single morning drink determines weight loss; the deciding factors are daily energy balance and a sustainable nutrition system. The safest baseline is water and unsweetened beverages. Black coffee or tea can help appetite control for some people, but should be used cautiously if you have stomach sensitivity. Mineral water on an empty stomach may cause discomfort in some individuals, so it should be tolerance-tested. The highest-impact strategy is a balanced breakfast with protein and fiber, increasing daily movement, and cutting sugary beverages. Operational habits outperform “detox drink” claims.