The "bird test" is going viral on TikTok as a way to assess the health and longevity of a relationship. But the driving theory behind the test isn't new — it's backed by research from one of the ...
‘Bird theory’ is having a moment. L.A.-based occupational therapist Layne Berthoud saw her recent TikTok post on the topic hit 5 million views in just a few days. And hers is just one of a host of ...