In 1975, one of the most important painkillers was discovered by chance: endorphins, which are hormones naturally secreted by the body. These endorphins — a group of natural chemical compounds — are released from the pituitary gland in the brain. When present in high concentrations, they induce a feeling of euphoria, enhance the sensation of pleasure, and alleviate pain, whether physical, functional, or even emotional.
In 1980, the link between physical exercise and endorphin secretion was first identified. Researchers conducted numerous studies to determine which types of exercise most significantly increase endorphin levels and their associated sensations. The findings indicated that aerobic exercises of long duration, such as light jogging, are among the most effective in boosting endorphin concentrations. This is clearly observed in marathon runners, who, after a certain point in the race, experience a sense of happiness and euphoria so strong that they struggle to stop running, driven by a desire to prolong that stimulating and soothing feeling. For this reason, health professionals universally recommend regular physical activity as a way to cope with life stressors and to alleviate certain physical and psychological symptoms experienced from time to time.
If you are someone who has experienced this state, you likely understand what is meant by the term “Runner’s High” — a condition characterized by a long-lasting blend of satisfaction and relaxation that can persist for hours after exercise, particularly if the session lasts for at least 50 continuous minutes. This exercise-induced state may be comparable to other known endorphin triggers, such as laughter, massage, certain foods and nutrients like chocolate, or aromatic essential oils such as lavender and chamomile.
