Coffee and Heart Palpitations: When the Cup Is the Cause
A meaningful subset of coffee drinkers can feel their heart after coffee. Not in a vague way. In the specific way where you can count the...
No Curfews
What the research actually says about caffeine, decaf and the second half of the day.
Filed under caffeine-sleep Clear
Caffeine Sensitivity: A Hidden Epidemic
About half the adult population metabolizes caffeine more slowly than the other half. This is the conclusion of two decades of genetic research on the CYP1A2...
Decaf for People With Anxiety
A lot of people with anxiety have a complicated relationship with coffee. They love the ritual. They love the warmth. They love the moment. They also...
Caffeine Half-Life: Why 2 PM Is Lying To You
The "no coffee after 2 PM" rule has become close to gospel in sleep advice. It is repeated in wellness articles, sleep podcasts, and every productivity...
The 2 PM Coffee Problem and How To Fix It
There is a specific cup of coffee that wrecks more sleep than any other in a typical day. It is the 2 PM one.