What does caffeine do to your body during exercise?

Caffeine affects various physiological responses during exercise. One significant aspect is its ability to enhance performance for many individuals. However, it can also have drawbacks for some people, such as causing jitters, increased heart rate, and dehydration when consumed in excess. While caffeine may provide an energy boost and improve endurance, not everyone responds positively, leading to potential performance hindrance for certain individuals.

In contrast, the idea that caffeine enhances hydration is a common misconception. While caffeine is a mild diuretic, which means it can lead to increased urine output, it does not significantly compromise hydration during moderate consumption for most people. Furthermore, caffeine does not replenish lost water; adequate hydration through water or other fluids is necessary for optimal performance. Finally, caffeine does not increase flexibility; flexibility is more directly influenced by stretching and warm-up activities, not by stimulant effects of caffeine.