Table 1. Systematic search strategy across electronic databases.

MeSH: medical subject headings, EMTREE: Elsevier life science thesaurus

Search query components (Boolean operators)	Applied filters	Syntax/modifiers
Population: ("Students, Medical" OR "Medical Students" OR "medical trainee*") Intervention: ("Breathing Exercises" OR "Pranayama" OR "Yoga Breathing" OR "Volitional Breathing" OR "Kapalabhati" OR "Bhramari" OR "Alternate Nostril Breathing") Outcome: ("Anxiety" OR "Stress, Psychological" OR "mental well-being" OR "cognition" OR "attention")	Humans; Publication Date: From 2010 to Present; Language: English	PubMed: MeSH terms & text words; Truncation (*); Phrase searching (" ") Other DBs: Adapted field codes (e.g., TITLE-ABS-KEY in Scopus)