Feeling emotional, sad, low after yoga

[Shavasana]

Can any fellow yogi help me understand this phenomenon please?
I did a yoga class on Friday evening. There were a lot of hip opening poses eg lizard. During Shavasana I felt suddenly overwhelmed with an intense yearning for my daughter (young independent adult now). I wanted to hold her, smell her hair, see her beautiful face. I shed a few quiet tears.
When I got home I had had a missed call from her. Surely just an odd coincidence but she was feeling unwell with her period and had gone to bed early. She obviously wanted “mummy”, and I gave her a reassuring few words.
All weekend I’ve felt low in spirits, have cried quietly a couple of times, have not had much energy. I had to cancel a trip with a friend as I actually couldn’t face being with anyone.
I’ve heard of this phenomenon before but never experienced it to this degree. I read online that “our hips store our deep feelings “ (how? Seriously, how does a body part “store emotions”?), and that hip-opening poses can trigger these deep feelings . Again - how? I don’t want to experience this to this degree again after yoga - do I just avoid lizard? I like pigeon and it has never triggered this.
Can any fellow yogi relate to this? Or explain it to me?
Sorry for the long post. This experience has unsettled me.

Glad to hear you find yoga so beneficial OP.

Is it really necessary though to disparage the tradition, thought and philosophy the practice comes from as ‘woo’?

The best yoga teachers I ever had would start the class with a chant and end it with a short salutation and talk about some of the stories and traditions during the class. I loved it. It found it really enriching to get these glimpses into the whole rich tradition and meaning behind yoga practice.

The spiritual side, which is integral to yoga, may not be for you but there is no need to disrespect this huge tradition, which has after all given you something you love, by disparaging it as ‘woo’.

in all honesty, there is something really arrogant about how the west has taken yoga, divorced it from its tradition and marketed it as ‘exercise’, and them mocks the rich tradition behind it.

Please don’t do that. You can enjoy yoga classes as you wish without mocking its origins and meaning.

Also, yogi has a specific meaning in Hinduism and yoga tradition. . People who go to yoga classes are not yogis.