Hi I used to coach when my family lived near Baltimore. Now that we have moved Iâ€™ve started my 2 year old in a parent tot class. The new gym is great except they want the children to do bridges as a part of stretch. After class I pulled the coach aside and told her that bridges were harmful for such young children to be doing. She claimed to have never heard this before. So I was wondering if any one could supply me with the actual facts of what harm could be done and any articles or quotes form specialist would also be helpful if any exist, so I can pass this information on the owner of the gym he attends. Thank you so much for any help you may be able to provide.