Caffeine's effects on workout performance are multifaceted. It can improve endurance and strength training outcomes by increasing overall performance measures such as speed and power output. Research suggests that consuming caffeine pre-exercise can enhance reaction time, improve focus, and delay fatigue. However, the optimal dosage and timing of caffeine consumption can vary among individuals. It is recommended to experiment with caffeine strategically to evaluate its personal effectiveness while being cautious of potential side effects like increased heart rate or anxiety.