Mild CNS stimulants work by subtly increasing neurotransmitter activity, improving circulation, or enhancing oxygen delivery to the brain, promoting mental clarity and vitality. These substances are often used to combat fatigue and improve cognitive performance. Green tea (Camellia sinensis), containing both caffeine and calming L-theanine, offers a balanced boost in energy and focus. Rosemary (Rosmarinus officinalis) is traditionally used to enhance memory and concentration through its circulatory and aromatic effects. Gotu kola (Centella asiatica) gently supports mental clarity and focus by improving cerebral circulation. These mild stimulants provide a natural and sustainable way to enhance energy and cognitive function.