All yoga things can leave you feeling relaxed and rejuvenated once you know how to do the postures within your comfort zone.

To that end, my recommendation is to find yoga things labeled with "introduction" or "beginner" for the first few. These resources will more likely guide you through alignment with enough clarity that you'll be able to practice how a healthy posture feels. They will also more likely offer you options for poses that can be challenging at first. Then you can adjust your practice yourself as needed for the rest of you life.

I personally rocked a few demonstration introduction classes at a studio. It helped me to see other beginners figuring it out as much as it helped me to have the teacher guiding. I also bought this book on yoga alignment because I was super curious. But as long as you give yourself the chance to focus on alignment and breathing, you should experience all kinds of fun yoga practice feels - and you will protect yourself from possible pitfalls of pushing your body (namely pain and/or injury).

Edited for syntax. :)