01 Caffeine
Useful for some, with real tradeoffs A familiar amount may support alertness. More can produce anxiety, palpitations, and damaged sleep. The FDA 400 mg/day reference is not a target.
02 Binaural beats
A sound condition, not a treatment Two nearby tones sent to opposite ears create a perceived beat. Attention findings and brain-entrainment claims remain inconsistent.
03 Adaptogens + nootropics
Product-specific and often overmarketed “Natural,” “adaptogen,” and “nootropic” are not evidence grades. Ingredients, purity, interactions, task, and repeated observation all matter.
04 Prescription stimulants
Clinical treatment, not shared equipment They can be effective when appropriately prescribed and also carry misuse, addiction, and overdose risks. Never borrow or share them.
05 Cannabis
Felt focus can disagree with measured focus THC can impair attention, memory, learning, decisions, coordination, and reaction time. Tone Bloom logs cannabis only as an observational context tag.