I started 5:2 this morning on a bit of a whim. I know someone who has done it for years now and it works for them. They are going to lend me the book.
In the meantime I'm just totting up my days food and keeping it under 500 caps. But when I Google calories in an apple it tells me according to the weight of the apple. Do I have to cut up the apple and weigh the parts I eat, or weigh the whole thing including core? I don't want to cheat!