Physical activity

Physical activity refers to any bodily movement produced by skeletal muscles that results in energy expenditure above resting levels. It encompasses all forms of movement—ranging from everyday activities like walking or climbing stairs to structured exercise such as endurance training or resistance workouts. While not itself a molecular entity or druggable target, physical activity triggers complex biological responses at the cellular and systemic level—including improved cardiovascular function, metabolic health benefits such as fat loss and better blood sugar control, enhanced muscle strength and endurance, reduced inflammation markers, improved mental health outcomes via neurotrophic factors like BDNF, and overall increased resilience against chronic diseases. Large-scale research efforts aim to decode the precise molecular transducers responsible for these benefits, with hopes that future therapies might mimic some positive effects for individuals unable to engage in sufficient exercise. In summary: "Physical activity" should not be considered a canonical therapeutic target but remains one of the most powerful modifiable behaviors influencing human health across multiple biological systems.

Other names

ExerciseActivity (general)Bodily movement

Not applicable as physical activity is not a molecular target; it induces broad physiological changes through multiple pathways including cellular signaling cascades and gene expression changes.