Ingabe i-caffeine iyasiza empilweni yengqondo?
Noma yini engaphansi kuka-400 mg we-caffeine ilungile. Ukusetshenziswa ngokweqile kungaholela ekungalaleni, ukuqhaqhazela nokushaya kwenhliziyo ezimweni zokudla ngokweqile. Kunososayensi abaningi bezinzwa abagqugquzela futhi bakhuthaze ukusetshenziswa kwe-150 mg ye-caffeine ngosuku.