1 min gestures

Hi! I recently started studying gesture drawing daily. May I ask for advices?

Advice#1: Keep on trucking. You spend your time repeately analysing poses, and the way you analyse them makes narrative sense. 95% of getting better will come from you observing your own drawings and making small and minute adjustments over time. Asking for tips is nice, but there isn't so much improvement to be had from reading tips. Drawing is about practice, putting practice precisely into words is hard, decoding such words into precisely the practice it means is hard, too. Conveying any fine details that way is almost impossible. You are mostly doing well, what you are doing, keep at it.

Advice#2: Here is a thing, that you could maybe do. At the moment you are mostly focused on pose and posture, and that is fine. You could maybe hit 2 birds with 1 stone, if you draw your actual lines a bit slower, but also include line quality techniques. Measure start and end for each line first, then shadow the line, then put down the mark in one decisive movement. Make sure all straights are beautifully straight and all curves beautifully curved.
The reason to integrate that into your posture grind is, this is one of the things, that will do little if you do it once or twice, it should be repeated hundreds of times until it becomes your natural sequence of movement.

This does not imply, that you are currently doing your posture grind wrong, or that grinding posture isn't important and you should do something else. This just means, if you keep doing what you are doing, and then integrate this as well, you will end up getting more out of your practice time.

Keep on trucking & try to draw lines in one movement. Got it. Thank you 🙏

May I ask
1. Why drawing each line in one decisive movement is important?
2. "You could maybe hit 2 birds with 1 stone" - is this mean doing pose and posture with drawing each line in one decisive movement?
3. What's the difference between pose and posture?

Ahm, pose and posture is not really a different term.
The drawing each line in one decisive movement is one of the basics of line quality. It makes basically the difference between producing an image, that looks "clean" and one that looks scribbled and funky. You can have nice looking images that are drawn with funky lines, if they have other qualities that save the image, but if you want to have the aesthetic decision between drawing clean or drawing funky, you have to practice that drawing clean part, as it doesn't come naturally. And if you know how to draw clean, even when you decide to draw funky, your funky will look more purposeful.
Usually, funky lines just look indecisive and amateurish,.... which can be an interesting effect, if you do it on purpose, but quite a drag, if it just happens to you, and you don't know how to avoid it.