Caffeine type

Fast Burner

Caffeine clears quickly

About 1 in 6 burn it this fast

Your body flushes caffeine fast. You can drink later in the day than most people without it stealing your sleep.

Half-life
~3.5 hrs
Bedtime limit
~100 mg
2pm coffee, still active at 11pm
~17 mg

What this means for your day

A coffee at 2pm leaves only about 17mg still active by 11pm, well under your roughly 100mg bedtime limit. Timing is genuinely less of a constraint for you than for most people, which is why generic advice like "nothing after 2pm" probably feels needlessly strict.

What to watch for

The trap for fast burners is not sleep, it is dose. Because caffeine wears off quickly you tend to reach for the next cup sooner, and total daily intake creeps up. That is where jitters and the afternoon crash come from for your type, not from late timing.

Get your actual curve, not a bucket

This result comes from three questions. The app models your real clearance from your own logged drinks, then gives you a sleep-safe cutoff, crash forecast, and jitter threshold that update as your day goes.

Download Caffeinly → Retake the quiz

A quick read from three questions, not a lab test. Figures come from a standard one-compartment model using this type's average half-life and a 95mg coffee. General wellness information, not medical advice.