During this stage you validate the assumptions underlying your value proposition, and discover what customers really care about. This is a long and iterative process.

Product-market fit happens when you have evidence that your product is creating va...

• Gut Microbiome- https://link.springer.com/article/10.1007/s00394-021-02760-4
• Plants

https://pubmed.ncbi.nlm.nih.gov/32105111/

• Oral Hygiene- http://my.clevelandclinic.org/services/heart/prevention/risk-factors/hic-oral-health-cardiovascular-diseases
• Walking