While I might focus a little heavy on the importance of Gesture Drawing, Long Pose Drawing has a significant place in an artist's tool kit. Learning how to apply anatomy, proportions, landmarks, and other figure drawing techniques' all happens while practicing drawing longer poses.
Let's put this to action in the first video of the series and try out hand at 2x10 minute drawings.
Reference photos from:
https://grafitschool.gumroad.com/?sort=newest
Other Videos you might find helpful:
Gesture Drawing
https://youtu.be/7WfZsHjTmQA
Line of Action
https://youtu.be/BNP5V8nGxRc