I don't know where you are, but here are some recommendations: 1. HC Sauna Forum: an information exchange platform suitable for Chinese mainland area and providing sauna products, services and technologies. 2.SpaSeekers Community: Applicable to the UK, providing discussion and suggestions on various topics of spa and sauna. 3.Spafinder Community: It is applicable to all regions of the world, providing topic discussion, experience report, health advice, etc. In hot springs and saunas. 4.Reddit Sauna subreddit: Global users share sauna experience and suggestions. 5. Go to local saunas, clubs and gyms to participate in offline sauna activities, meet like-minded people and build communities.