https://www.health.harvard.edu/heart-health/optimism-and-your-health

 

http://www.npr.org/sections/health-shots/2016/12/07/504709736/a-brighter-outlook-could-translate-to-a-longer-life

 

https://www.scientificamerican.com/article/why-do-we-swear/

 

https://www.cambridge.org/core/journals/nutrition-research-reviews/article/phenolic-compounds-of-olive-oil-structure-biological-activity-and-

beneficial-effects-on-human-health/EE4FA28B6CD751AA15B278589A447A3D#

 

https://www.healthline.com/nutrition/extra-virgin-olive-oil#section2

 

https://www.ncbi.nlm.nih.gov/pubmed/8576498

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http://www.heart.org/HEARTORG/HealthyLiving/PhysicalActivity/Walking/Walk-Dont-Run-Your-Way-to-a-Healthy-Heart_UCM_452926_Article.jsp#.Wfmr7hO0MU

 

https://www.osha.gov/SLTC/indoorairquality/

 

https://www.epa.gov/indoor-air-quality-iaq/introduction-indoor-air-quality

 

https://www.cpsc.gov/Safety-Education/Safety-Guides/Home/The-Inside-Story-A-Guide-to-Indoor-Air-Quality

 

https://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side

 

https://www.getthefacts.health.wa.gov.au/condoms-contraception/types-of-contraception(top10)

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https://www.scientificamerican.com/article/superpowers-for-the-blind-and-deaf/

 

http://www.bccdc.ca/health-info/diseases-conditions/sexually-transmitted-infections-%28stis%29

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https://www.livescience.com/37009-human-body.html

 

https://www.britannica.com/science/human-body

 

https://www.hivanswers.com/

 

http://www.bccdc.ca/health-info/diseases-conditions