Answer:
The role of increased blood flow
During moderate- to high-intensity exercise, your muscles and tissues demand more nutrients and oxygen, which means that your heart must work harder and pump faster to meet those needs, says preventive cardiologist Haitham Ahmed, MD.
Umm I think that it is normal because some people are different then other
Answer:
THC’s chemical structure is similar to the brain chemical anandamide. Similarity in structure allows the body to recognize THC and to alter normal brain communication.
I would say C, his nutrition. Maybe eating more vegetables and fruits will provide him the energy to push harder.
It is called rationalization
