Lactate threshold is the point during exercise at which the body starts to produce lactate faster than it can be removed. This typically occurs at higher intensities of physical activity, such as running or cycling. When the body relies more on anaerobic metabolism for energy, lactate accumulates in the bloodstream, leading to fatigue. Understanding lactate threshold is important for athletes and coaches, as it helps in designing effective training programs. By training at or just below this threshold, individuals can improve their endurance and performance, allowing them to sustain higher intensities for longer periods without fatigue.