The goal of this observational study is to learn about the effects of physical activity in adult on metabolic response. The main question it aims to answer is:
* if physical activity is unlimited to increase the total energy expenditure (TEE)?
Participants will engage in the following measurements:
* Record their daily physical activity by GT3X. * Measure TEE by doubly-labeled water (DLW) method * Measure basal energy expenditure(BEE) and thermic effect of food(TEF) by respiratory chamber
BMI ≥ 18.5 kg/m2
Individuals who have undergone major surgery in the past 6 months (excluding tooth extraction);
Individuals with severe metabolic and cardiovascular diseases such as diabetes, hypoglycemia, and hypertension;
Individuals with exercise-related injuries, including joint diseases and fractures;
Individuals diagnosed with infectious diseases such as HIV, tuberculosis, malaria, etc.;