scienceofpeople.com
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Science of People is a science-based resource on body language and nonverbal communication, offering articles, videos, and online courses to help you read others, build presence, and improve speaking.
More resources on Body Language for Speakers
toastmasters.org
Toastmasters.org is the official site of Toastmasters International, offering resources to develop public speaking and leadership skills, including tips, articles, and program information. You’ll find guidance on body language, presentation delivery, and how to join or start a club, along with details on the Pathways learning experience.
Dynamic Public Speaking
Coursera course: Public Speaking and Presentations
mindtools.com
MindTools is a practical career-skills site offering articles, templates, checklists, and self-assessments on communication, presentation skills, body language, and other workplace competencies.