I have recently developed a pain over the top of my iliac crest on the right side which feels like bruising. I ran 10k last night and it niggled for the whole distance. This morning it is quite sore and hurts most walking upstairs. Has anyone had experience of this and what did you do to treat it?
You are probably replacing body fat with lean muscle tissue which weighs more! Good news is muscle uses more calories than fat so you should burn more too. Weight comparison is not a good indication of progress for the above reason. If you're not doing core strenghtening exercises you should incorporate these into your training to keep your abs toned. When I trained for my first marathon I lost most of my body fat (too skinny!) but it equated to less than 2 kg total weight loss because of the muscle I had gained in the process. It's also worth investing in a sports nutrition seminar just to make sure you are eating the right combination of food groups.