There are ways to naturally recreate some of those same hormones. These increase dopamine (motivation and reward).
A cold shower. Making your bed. Write a short to do list. Finish one small task. Clean a small space.
Natural endorphins (energy and pain relief):
doing a quick workout, laughing out loud, dance to one song, do deep breathing, take a warm shower.
Natural oxytocin (connection and bonding):
Spend time face to face, help someone out, hug someone, pet an animal, give a genuine compliment.
Natural serotonin (mood, calm and stability)
Stretch your body, go for a short walk, sit quietly in nature, practice gratitude, get sunlight (5-10 minutes).
As you practice these and other things could they recreate some level of the chemicals we need to function?
Then just like your workouts in a gym, will they lead to your dopamine and other levels increasing with regular 'mind' work outs?