My daughter is still pretty new to team gymnastics (She started in October). I've become a little paranoid about back injury after reading the forums here. She has a very flexible back. It's definitely where she demonstrates her best flexibility. (Her leg flexibility is not great.) She does a beautiful bridge, limbers are pretty easy for her(I think that's what they are called), and BWOs on the beam and floor are a strength for her. (Lots of other things are a challenge for her!) After reading stuff on here, I've told her no more BWOs or limbers at home. I think her gym is pretty good about limiting the amount of these they do in practice. However, they do a timed bridge in their warmup. I think they only have to hold it for about 10 seconds, BUT sometimes they require the whole team to hold it for 10 seconds and they keep going until everyone has it. I observed this one time (I don't usually watch much), they were in this position for quite a long time- maybe 3 to 5 minutes. She actually held the entire time (except I think came out of it once.) Is this something that would be damaging to her back? The HC was away at a meet, so maybe it was unusual to let this go on this long. She occasionally complains her back is sore but it goes away after a day or so. Should I be worried? Thanks!