irishrose, all my yoga instructors have stressed it's your yoga practice, so try not to worry or think about the others in the class and do what you can do. Also, if you're not happy with one class try a different one and/or a different instructor. I just went back to my 'old' instructor this week and only 10 mins into the class I already felt a better stretch than in my other yoga class. In my most recent class the other students had known each other for a long time and would chat and make jokes during class. In hindsight, I think with the chatting going on I was unable to fully relax and focus on the yoga.
I have a bunch of fruit to wash and cut up and veges to cook today. Here's to healthy food choices today!!