The benefits of Exercise

Exercise as treatment for stimulant and alcohol abuse:

https://trialsjournal.biomedcentral.com/articles/10.1186/1745-6215-12-206
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30 minutes of daily walking to improve self esteem, mood, interest in sex, and on and on:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470658/

https://www.mayoclinic.org/diseases-conditions/depression/in-depth/depression-and-exercise/art-20046495

Exercise increases BDNF, now believed to play a critical role in healing depression. 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5591905/