starting bootcamp

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I start boot camp today im soooo excited but yet sooooo nervous at the same time. idk which one more. I need to focus on my form! I don't quite have the right technique for lunges and squats and im afraid im gonna injure myself tryin to keep up with everyone. i always think the worse of myself so i know im gonna b worried about what ppl think about me on how im doing it. but yet i KNOW nobody will even be focusing on me they will b to busy focusing on their own techniques. ugh