CJ_Redux 137 Posted June 14, 2012 I've been on my pre-op diet for almost a week and doing ok with hunger; am drinking a lot of Water with crystal light....but wanted to know if anybody else was so weak! I get tired pulling up my underwear! LOL. I'm the most tired in my upper body/arms...any advice? I'm getting all kinds of Proteins from my diet. Yep, i feel weak most of the time too. I wonder if I'm getting enough calories, and I know I'm not. I've been at around 300 - 500 calories. I just can't get in more with this type of food. Share this post Link to post Share on other sites