Does caffeine improve exercise performance?
A look across 21 meta-analyses puts the strongest case for caffeine in perspective.
Read the research brief →A closer look
at caffeine.
Ten studies. Clear explanations. A little more context for your everyday choices.
From your morning desk to your afternoon workout, caffeine raises good questions. We have translated ten selected papers into concise research briefs, with links to the original sources and room for what remains uncertain.
Start with caffeine’s effects on attention and movement. Then explore coffee research separately: a finding about coffee is not proof of a benefit from caffeine pills.
Caffeine, attention & movement
Caffeine before a workout: what matters?
Timing, amount and individual response all shape the conversation.
Read the research brief →Caffeine for endurance: a small edge, explained
What time-trial research can tell runners and cyclists, and what it cannot.
Read the research brief →Can caffeine help with strength and power?
The effects are smaller than the hype, but the research is worth understanding.
Read the research brief →Why can exercise feel easier with caffeine?
The feeling of effort is one part of the performance story.
Read the research brief →Caffeine and focus: what does the research support?
Alertness is a clearer promise than effortless productivity.
Read the research brief →Coffee & long-term health
Observational findings, explained with their limits. These studies do not establish disease prevention by caffeine supplements.
Coffee and health: what the headlines leave out
A large review is informative. It is not proof that caffeine pills prevent disease.
Read the research brief →Coffee, longevity and caffeine metabolism
A large UK study raises interesting questions without settling cause and effect.
Read the research brief →Coffee and type 2 diabetes: understanding the link
Both regular and decaf appeared in the findings. That is an important clue.
Read the research brief →Coffee and Parkinson’s: association is not prevention
An influential study is best read with its limitations close at hand.
Read the research brief →