L-Theanine

Anxiety, sAA ↓

BP stress response ↓

Cortisol, anxiety ↓

Mood: +

Anxiety/stress: −

Stress/anxiety ↓

Attention/RT ↑

Attention speed+accuracy

Fatigue/stress down

Attention/working memory up

+1.8 memory points

Caffeine combo boosts memory

Sleep quality + duration

Deep sleep +50%

↓ physiological stress

↓ anxiety/stress -17 to 22

↓ cortisol/HRV response

Faster attention RTs

Better ERP attention

+38 ms

Alertness/attention +accuracy

Fatigue/stress - sAA, +sleep