The phrase "a source of physical" is correct and usable in written English.
It can be used when discussing something that provides physical benefits or resources, such as energy, strength, or health.
Example: "Regular exercise is a source of physical vitality that can enhance overall well-being."
Alternatives: "a provider of physical" or "a contributor to physical".
The results of the present study suggest that UTIs after SCI are a source of physical, emotional and social distress and disruption.
In the 19th century the Industrial Revolution involved mechanization or replacement of human by machine as a source of physical work.
And while Buddhists and early Christians made world-denying behavior a foundation of their spirituality, the Greeks as often as not viewed asceticism as a source of physical, emotional, even political power.
If not hygienically designed, air-blast freezing systems may act as a source of physical, chemical, and microbial contamination because foods passing through the freezer might be contaminated with undesirable ingredients remaining from a previous product being frozen.
Heavy objects, often a source of physical strain when lifted or moved, can be made lighter by the use of light metal alloys, polymers, and foam-cored sandwich structures.
Children talked about wood for houses and furniture, indicating awareness that forests are a source of physical human requirements.
It's happening already in advanced manufacturing plants that no longer view workers solely as a source of brute physical labor but as members of innovating, knowledge-generating and problem-solving teams.
An ICU stay is a source of both physical and psychological stress, during which invasive techniques are used and patients are exposed to specific conditions related to technical care, safety, and monitoring imperatives.
Distal symmetric polyneuropathy (DSPN), the most common form of diabetic neuropathy, has a complex pathophysiology and can be a major source of physical and psychologic disability.
: Pressure sores are a significant source of physical and financial burden for debilitated patients.
Indeed, prolonged translaryngeal intubation is a major source of physical discomfort, for which sedation often is necessary [ 1- 5].
