How long before my workout should I take pre-workout supplements to maximize their efficacy and ensure optimal performance? Is there a scientifically backed timeframe that guarantees these products will deliver their stimulative and energy-boosting benefits at just the right moment? Considering the diverse formulations available, ranging from those rich in caffeine to others laden with amino acids and vitamins, does the timing differ based on the specific ingredients? Moreover, wouldn’t it be prudent to contemplate individual physiological factors, such as metabolism, tolerance to stimulants, and the intensity of the workout planned? Could it be that pre-workout timing can significantly alter the experience, influencing not only energy levels but also recovery rates? Should I be aiming for a specific interval, such as 20 to 30 minutes prior to my training session, or might there be exceptions based on personal preferences and workout types? What does current research suggest regarding these variables?