Collin often experiences a runner's high during his daily 3-mile run. This is most likely produced by neurotransmitters in his brain called endorphins.
Endorphins: They are the neurotransmitters or peptide hormones released in the brain and nervous system when exposed to some stress or intensive exercises.
They are often released in the brain to help relieve pain, reduce stress, and improve the sense of well-being. They are the kind of neurotransmitters that attach to opioid receptors in the brain and carry signals across the nervous system. They work by blocking the nerve cells that receive the pain signals.
People often feel a "runner's high" after a long run. Other forms of exercise can also help you to release endorphins and relieve pain. These include swimming, dancing, hiking, power walking, massage, etc.
To know more about endorphins, refer to the following link:
brainly.com/question/10102983
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