I'll try to update regularly or at least as feedback comes in.
Useful Links
https://www.seniorlifestyle.com/resources/blog/7-best-exercises-for-seniors-and-a-few-to-avoid/
City Libraries: https://sandiego.librarymarket.com/
County Libraries: https://www.sdcl.org/
Santee Activities: https://www.cityofsanteeca.gov/government/community-services/parks-recreation/santee-seniors-55
Walking Groups: https://www.sandiegocounty.gov/content/dam/sdc/hhsa/programs/ais/health_promotion/Walking-Groups-in-San-Diego-County.pdf
George L Stevens 4th District Senior Resource Center: https://fdsrc.org/whats-up-at-fdsrc/
Chula Vista Norman Park Resource Center: https://www.chulavistaca.gov/home/showpublisheddocument/25240/638001285158730000
Feeling Fit Schedule: https://www.sandiegocounty.gov/content/sdc/hhsa/programs/ais/health_promotions.html/About_AIS_Health_Promotion.html
Park De La Cruz Age Well Services: https://www.sandiego.gov/sites/default/files/agewellservicesscroll-fall.pdf
San Carlos Rec Center: https://www.sandiego.gov/sites/default/files/sancarlos.pdf
City of San Diego Parks and Rec AgeWell Services: https://www.sandiego.gov/park-and-recreation/activities/agewellservices
Registration for City Park and Rec:
https://apm.activecommunities.com/sdparkandrec/Activity_Search/102523