Does Guarana Exercise Performance Randomized Trial work?

The current Migaku evidence database contains 2 reusable source documents for Guarana Exercise Performance Randomized Trial. This answer focuses on strength of evidence and what the studies can or cannot prove. - Research has found that prolonged exposure to blue light affects athletes' sleep quality, athletic performance, and cognitive function []. [Huang Da (2025); evidence level 1] - Among esports players, nutritional supplements [], sleep regulation [], and physical exercise [] have been identified as factors associated with cognitive function and psychological mood. [Huang Da (2025); evidence level 1] - 13 11 14 15 10 16 17 18–20 For instance, sleep regulation has been found to effectively improve cognitive function in physically active young populations []. [Huang Da (2025); evidence level 1] - 1 2 Electronic sports (esports) are defined as ‘organised competitive digital games that vary in terms of their level of professionalism’ []. [Huang Da (2025); evidence level 1] - This narrative review synthesizes evidence on naturally derived compounds that influence these pathways, including guayusa, guarana, Alpinia galanga , theobromine, L-citrulline, beetroot extract, cordyceps, and niacin, as well as natural sweeteners such as monk fruit and stevia. [Panda R (2026); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.