<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.theanine imesomwa kwa uwezo wake wa kupunguza dhiki ya kiakili na ya mwili, kuboresha utambuzi, na kuongeza hisia na utendaji wa utambuzi kwa njia ya kushirikiana na kafeini.  <response>: theanine has been studied for its potential ability to reduce mental and physical stress, improve cognition, and boost mood and cognitive performance in a ... 