― I’m a great believer in the power of fibre. In fact, the F-Plan diet was probably the first proper diet I ever tried. ∙ This high fibre diet plan is all about filling yourself up with loads of fibre while eating fewer calories. Because fibre acts like a sponge and absorbs water, it helps fill you up more which is just what you want when you're dieting. Plus it’s harder to chew so takes longer to eat and digest. ∙ ∙ Kellogg’s All Bran featured in that diet and I’ve [...].