*2.2. Databases and Key Words*

Following the PRISMA guidelines for conducting systematic reviews [43], a search was conducted in PubMed, Web of Science, PsycINFO and Embase using the following search terms: "energy balance-related behavior", "energy balance", "energy expenditure", "physical (in)activity", "physically (in)active", "exercise", "training", "sport", "moving", "work-out", "leisure (time) activity", "walking", "biking", "(in)active lifestyle", "lifestyle (related) activity", "household activity", "housework", "gardening", "active transport", "transportation", "sedentary", "sitting", "lying down", "diet", "food", "eating", "nutrition", "caloric intake", "energy intake", "burn-out", "affective disorder", "adaptive disorder", "common mental disorder", "psychological discomfort", "psychological stress", "psychological health", "psychological illness", "psychological fatigue", "job stress", "toxic stress", "chronic stress", "work stress", "occupational stress", "occupational health", "exhaustion", "mental fatigue", "mental illness"; "mental disorder", "well-being", "emotional burden", "depersonalisation", "personal accomplishment", "cynicism", "inefficacy". The PICO/PECO method [44] was used to

structure and combine key words using Boolean terms. Wildcards were used for plural, other spelling and to cover British and American English equivalents.
