These are overall good, but there are parts of them that stand out as especially strong (as an example, I think there's an absolutely great sense of depth and volume in the bent knee in the crouched pose marked "2"). Additionally, I feel that you've got an undergirding sense of gesture supporting your structural forms (5 for instance is a standout in terms of capturing the motion of the pose). My impression is that you're in a bit of a growth stage with these, leveling up a bit (just my guess based on how well executed some of the elements are in comparison to some of the others, which are competent but not quite as strong), so definitely keep grinding them out and trying to bring everything up to the same level. In terms of constructive critique, there are some proportional issues (the stretched cranium in 7, the shrunken cranial mass in 3, and the too-long humerus in 1, for instance). This is a natural stage of learning but make sure you're catching these by measuring when you go back and self-critique your quicker drawings, while also being extra careful to slow down and "get it right the first time" on your slower, more carefully considered drawings. I would recommend trying to be a bit neater with these, even if you have to slow down or draw them much bigger to achieve it. On the other hand, a lot of your wrapping lines really do feel like they're going all the way around the form, which is great. As a final constructive note, I see that you're thinking about anatomy a bit with these, but there are some inaccuracies that you don't want to become habits - the ridge muscles in drawing 2 seem to originate much too far up the humerus, and the deltoid group does not feel like it's inserting in the humerus in your drawing. I hope this helps!