Measuring activity accurately poses several challenges:
Self-report Bias: Individuals may overestimate or underestimate their activity levels due to memory recall or social desirability. Technological Limitations: Wearable devices can sometimes be inaccurate and may not capture all types of activities. Variability: Activity levels can vary greatly among individuals and across different times and settings. Cultural Differences: Different cultures may have varying perceptions and definitions of activity, complicating cross-cultural studies.
