slainjaberwock

I am planning to give blood soon and found this thread in the course of doing some research on blood donation and calorie counting. Here is what I learned. According to an article I found in Science Focus magazine ( http://sciencefocus.com/qa/when-i-give-blood-how-many-calories-does-my-body-use-replacing-it ) your body…

I'm really struggling with this too - especially because my exercise calories fluctuate an awful lot. I play roller derby and on practice nights I spend 2-3 hours skating hard and hitting people. It seemed crazy that I would be burning 1000+ calories doing anything but every way I calculate it I get at least that. On…