Especially if you're new to running, you may have yet to experience the runner's high. While research (and lots of first-hand reports) does show that the high exists, there isn't necessarily a magic distance or length of time you need to run to feel it.
It's different for every runner. Some may feel a runner’s high after their first 30-minute continuous run, while others may not have ever felt it during years of running.
Once you do experience it, you may not feel that way after every run. You could go a long time before it happens again.
Runners who have felt the high describe it in many different ways. They often use words like "calm," "peaceful," "euphoric," and "blissful." The word "high" isn't an accident, because a runner's high is similar to the altered state of consciousness associated with painkilling drugs.
Some runners say they feel like they're floating, almost as if they're weightlessly running on air. Minor aches and pains disappear, and runners may lose their sense of time, too. Perhaps most of all, running seems effortless and you feel like you could keep going forever.
As good as it might feel to ride this sensation for as long as possible, be careful not to overdo it. It's okay to run a little longer or farther than you planned, especially if you only experience a runner's high sporadically. But too much training can lead to overuse injuries.
Something about distance running's rhythmic, moderate-intensity seems to contribute the most to the runner's high (since runners experience it more than other athletes). Several processes are happening in your body and brain as you run that contribute to the high.
Research shows that your body releases endorphins, a feel-good hormone, during exercise. They were once thought to block pain sensations in the brain.
However, we now know that endorphins can't pass from the blood into the brain. So they are likely not responsible for the euphoric feelings of the runner's high—but they do help prevent muscles from feeling pain.
Like endorphins, endocannabinoids are biochemical substances that the body produces. Unlike endorphins, though, endocannabinoids can do their work in the brain. Scientists now believe that these substances are responsible for the euphoric feelings associated with the runner's high.
And yes, there is a connection with cannabis: Endocannabinoids are cannabis-like substances that are produced in the body. They are not acquired from smoking or otherwise consuming cannabis.
Is there a way to bring on a runner's high? There are some strategies you can try if you have yet to experience the high.
Remember that even if you don't feel a runner's high, you're still getting plenty of other benefits from running, from stress relief to better self-esteem to improved cardiovascular health.
Endorphins: The Body's Natural Pain Relievers