Sugar can have detrimental effects on physical performance, especially when consumed in excess. High sugar intake can lead to fluctuations in blood sugar levels, resulting in energy crashes that impair endurance and strength. Moreover, excessive sugar can promote inflammation, hindering recovery and overall performance. While small amounts of sugars can provide quick energy during intense activities, relying on sugars can also contribute to unwanted weight gain, negatively impacting athletic performance. Therefore, moderation is key when incorporating sugars into a diet for enhancing physical performance.