Self-care when you’re knitting is important for preventing problems before they occur. Taking breaks is something that I will always advocate and beginning to practice yoga, to give a little therapy for the parts of your body that you use when knitting, is the perfect tool to learn.
It’s a great idea to mix up the knitting that you have in your schedule too. If you’re doing a lot of repeating patterns, with twisted stitches or tight decreases, you may notice tension building up. To prevent that causing pain or tightness ideally you’d have a couple of projects onto go at once, so you can switch to a plainer knit which uses different wrist and finger movements.
Enjoy this light yoga video, with a few beginner poses, for a five minute break to support your knitting
But of course be aware: this is not medical advice.
See a doctor or other medical professional if you need extra support and stop if you feel discomfort while practising.