Answer: Jose's lack of pain after a long, bruising football game is most likely caused by the release of endorphins.The correct option is d.
Step-by-step explanation:
Endorphins are natural painkillers produced by the body. They belong to a class of chemicals called opioids and act as neurotransmitters in the brain. During intense physical activity, such as playing football, the body may release endorphins as a response to pain or stress.
When endorphins are released, they bind to opioid receptors in the brain and spinal cord, blocking the transmission of pain signals. This can result in a reduced perception of pain and a feeling of well-being or euphoria.
In Jose's case, the release of endorphins after the football game would help alleviate any pain or discomfort he might have experienced. Endorphins can also contribute to a sense of exhilaration and can improve mood, which may explain why Jose feels little fatigue despite the physically demanding game.
In summary, the lack of pain and discomfort that Jose feels after the football game is most likely due to the release of endorphins. These natural painkillers act on the brain and spinal cord to block pain signals and promote feelings of well-being.