Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Robusta coffee is widely used as a source of caffeine, which is scientifically validated to enhance alertness and reduce the perception of fatigue, thus supporting energy levels. Robusta coffee beans (Coffea canephora) typically contain higher caffeine content (about 2.2-2.7%) compared to Arabica beans (1.2-1.5%). Numerous clinical studies confirm that caffeine acts as a central nervous system stimulant. It works primarily by blocking adenosine receptors in the brain, thereby reducing feelings of tiredness and increasing wakefulness, attention, and perceived energy. Systematic reviews and meta-analyses have consistently shown that moderate caffeine consumption improves cognitive performance, mood, and physical endurance in both habitual and non-habitual users. While the primary benefit is attributed to caffeine rather than other specific compounds in Robusta coffee, the higher caffeine content makes Robusta a preferred choice for those seeking a more pronounced energizing effect. However, individual tolerance and sensitivity to caffeine vary, and excessive consumption can lead to adverse effects such as jitteriness, insomnia, and increased heart rate. Overall, the use of Robusta coffee to counteract lack of energy is strongly supported by scientific evidence related to caffeine's stimulant properties.

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