Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Video may lead to injury

I am a long time athlete involved in gymnastics, yoga, pilates, dance, ect. I bought this video hoping for a good workout during pregnancy. The moves performed in this video will lead to injury especially in a person that does not normally stretch. There is alot of bouncing and jerky movements that are never recommended in yoga. The order in which they do moves makes no sense. You should properly warm up all your muscles before going into back bends and other tough moves. I did not even finish the entire workout b/c I was so disappointed in the lack of technique in this video.