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In a correlated groups design, the reasonableness of the null hypothesis is usually tested by assuming the sample set of difference scores is a random sample from a population of difference scores with µ D = 0.
Endorphins
Neurotransmitters produced by the body to relieve pain and stress, often associated with feelings of euphoria.
Prolonged Stress
Extended exposure to stressful situations or stimuli, which can have negative long-term effects on health and well-being.
Aerobic Exercise
Physical activity that improves cardiovascular health by increasing the heart rate and maximizing the amount of oxygen in the blood.
Stress-Moderating Hormone
Hormones that play a role in the body's response to stress, helping to regulate or moderate the stress response.
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