The SPiR Blog
Science you can actually use.
Research-backed articles on the biology of peak performance. No fluff. No fads. Just what the data says.
The 40% Rule: How Sleep Deprivation Destroys Your Memory
A single night of poor sleep causes a 40% deficit in your brain's ability to form new memories. Here's what the neuroscience says — and what you can do about it.
Why You're Most Productive at 4 PM (And What to Do About It)
You have 15–25 peak performance hours per week. Most people waste them on email. Here's how your circadian rhythm determines when they happen.
Flow State: The 5 Chemicals Behind 500% Productivity
A McKinsey study found executives are 500% more productive in flow. DARPA cut military training time in half. Here's the neurochemistry that makes it possible.
The 2% Threshold: How Mild Dehydration Impairs Your Brain
A meta-analysis of 33 studies found that losing just 2% of body mass to dehydration significantly impairs attention, executive function, and motor coordination.
Time-Restricted Eating: Why When You Eat Matters More Than What
A study of 1,269 students found consistent meal timing boosted cognitive scores by 11%. Here's why when you eat is a more powerful lever than what you eat.