Drawing by Tim Schafer
Here are resources, groups and other helpful links for artists that draw the human figure from life
The Art Models Handbook - Most notably, they maintain a list of drawing groups for artists all over the country, at this link: https://www.artmodelbook.com/figure-drawing-directory.htm
Meet Up : San Francisco Figure Drawing Group - great listing of various drawing groups around the San Francisco Bay Area
Sketchboard Community: another drawing group in San Francisco - I believe their sessions are on periodic Saturdays.
23rd Street Studio - drawing sessions in San Francisco. Great models, incredible set up.
Facebook Groups:
Oddists Drawing