Life drawing daily studies

Here are some sketches from life drawing sessions I did as a part of my daily sketches.
Every week I choose a subject and try to draw at least 1 hour a day focusing on that subject.
These were made two seperate weeks, I wasn't too happy about my first week, I felt like they were still very stiff and not natural, so I put a 30 seconds timer for a whole week.
I'd love to know what you think!