Dietary supplements can impact physical performance positively or negatively, depending on their type and use. Common supplements, like protein powder and creatine, can enhance muscle recovery and performance during high-intensity workouts. However, the efficacy of supplements varies among individuals, and excessive use may lead to health risks, such as kidney damage or imbalances in nutrient intake. It's important for athletes to consult with nutritionists or healthcare professionals before integrating supplements into their regimen.