>>76810347
>so i copped this device but my back hurts
that's peculiar
i think psoas covers entire lower back doesn't it?
>>76808782
abs:
>>76801585
>>>>76795059
>>>soft legs - both have soft legs - this is the proxy for switched off psoas
>>abs:
>>>pillow under lumbar spine crunch - lower abs
>>>dragon flag with full hip flexion - upper abs