Fasted exercise has both advantages and disadvantages. On one hand, exercising in a fasted state may enhance fat oxidation, potentially leading to greater fat loss. It also arguably improves metabolic flexibility. However, exercising without prior nutrition can result in decreased energy levels, diminished performance, and increased risk of muscle breakdown. For some, it may lead to feelings of lightheadedness or fatigue. Ultimately, individuals should consider their personal fitness goals and how their body responds to fasted workouts before adopting this approach.