The good news is, yoga is one of the most welcoming practices. There are so many varieties and levels of practice, so even if you struggle to keep up, you do not need to feel bad. Yoga is meant to benefit you, and therefore, you need to uncover the level right for your mind and body. Not to mention, time has shown that it is not always the bodybuilders and athletes who excel at their yoga regiment. Flexibility and emotional balance are key tenets of this practice. If you do not find these in your experience, then it will not matter how fit you are. If you can achieve this balanced relationship with mind and body then you are doing a great job!