Dancing
Yard work, like mowing or gardening or tree trimming
Biking
Hiking nature trails
Walking or jogging
Swimming
Recreational sports like tennis, racquetball, softball or even Frisbee
Make it social and get an exercise partner
Physical activity and exercise releases endorphins, which are created in the central nervous system and the pituitary gland. They then interact with the opioid receptors in the brain. These are some of our pleasure and pain centers.
A steady of flow of endorphins triggers a positive feeling in the body, and can act like analgesics, which means they lessen the perception of pain. Here are some of the other endorphin driven benefits of exercise:

This helps with:
Improved Sleep
Decreased feelings of Depression and Anxiety
Increased Self-esteem
Stress reduction
Rise in overall energy
Lowered blood pressure
Finding an activity that’s enjoyable will make it feel less like a chore. Remember to start slow and listen to your body. Never push through pain or take unnecessary risks that might cause injury.
Be realistic in terms of your goals and physical health. Adding a regular exercise regimen will generate endorphins and lead to a better state of mind.
Source: https://www.inspiremalibu.com/blog/healthy-living/exercise-endorphins-and-addiction-recovery/