The character in this video is practicing holding her breath to her limit. Please watch her challenge until the end!
You can watch the full 24-minute video at the link below:
https://heazhan.fanbox.cc/posts/7969831
This is an animation video produced based on IK hints. This method has advantages and disadvantages that are different from physical calculations. There are also methods that can be used in combination with physical calculations. This approach will be used in certain simulations of DSS.