Hi Mari,
I also had the same questions as you, and this is what I know. Several months ago, I joined a beginners' yoga class. This is with a bunch of gals that I have fundraised with, and we decided to do something else together. We are ALL beginners and have no previous experience or knowledge of yoga. I was a bit concerned about what I could or couldn't do with my ileostomy. Our instructor shared with us that it isn't a race, no one has to do/be better than anyone else, and told us to do what we can without straining any part of our body. It is about relaxing, doing what our body allows, and gently stretching and massaging body parts to gain better circulation, relaxation, balance, core strength, and generally feel better. I have learned not to eat several hours before my class but remember to stay hydrated with small sips of water. I wear high-waisted stretch pants to cover my bag and keep it somewhat in place and a loose-fitting top as I sometimes get a little warm. I don't think anyone notices that I have a bag as they are all concentrating on what they are doing and taking instruction. I do only what I feel is comfortable so I don't compromise my seal, and I am fortunate to have an instructor who will show us a move that can be done in several different ways (light, moderate, hard). Some of our gals have knee, back, shoulder, and other issues and can't do the pose as it should be done. We just do what we can and leave it at that. There have been many instances where we just laugh and fall over/down because our balance or strength isn't working for us, and then we pick ourselves up (after a good belly laugh) and begin again. I have found over the past several months that I am getting better with strength and balance and hope to improve little by little at my own pace. I feel better, have lost 6 pounds as I am more conscious of what I am eating, and I am taking this time for myself. I look forward each and every week to MY TIME. I wish you the best and hope you will give it a chance.
Dorothy