my daughter been passing out
my daughter whom is 17 and last year she was working out and legs got week and almost passed out, then she gave blood about month ago, and she felt week in legs and almost passed out several time this day and also day after, then yesterday she went out with her boyfriend, she said that her legs almost went out under her, and felt like passing out, claims that this happened after eating a cinnimin roll.. any clue what this is











