Apr 6, 2026Nutrition

Soccer Supplements Ranked: Caffeine, Creatine, and the Data

Soccer supplements ranked across 80 trials: caffeine, creatine, and the combinations with eye-catching effect sizes that still need replication in soccer.

creatinecaffeinesodium bicarbonatevo2 max

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Mar 24, 2026Physical Activity

Does Pre-Workout Caffeine Lower HRV After Exercise?

Pre-workout caffeine does not consistently reduce post-exercise HRV in pooled trials, but strength training and individual responses complicate the answer.

caffeinehrvpre-workoutpost-exercise recovery

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Mar 9, 2026Mental Health

L-Theanine and Caffeine for Focus: What the Evidence Shows

L-theanine plus caffeine can improve attention and reaction time, especially under sleep loss. Here's what human trials support—and what they don't.

l-theaninecaffeinesleep deprivationattention

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Mar 9, 2026Nutrition

Taurine and Energy Drinks: Does It Actually Improve Focus?

Do taurine energy drinks improve focus? The evidence points to caffeine as the main driver, while taurine's added cognitive value remains unproven.

taurinecaffeinenootropicscognitive enhancement

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