The caffeine cutoff: how many hours before bed the data suggests
A meta-analysis of 24 studies put numbers on caffeine's sleep cost and on the gap you need before bed. For a typical pre-workout serving, the answer is over 13 hours.
Protocol notes
Data-first notes on supplements by Nerd Protocols, a clinical and sports dietitian based in the EU. What the trials measured, what the community ratings show, and where the two disagree.
Tag: #caffeine · all posts