Due to this cold weather im very tempted to swap my brekkie shake for porridge which will have near enough the same calories as my shake. (230 cals) Would this be ok? Just am freezing in the mornings and needing a heat lift. (warm shakes and drinks just dont do the trick) Will still be having shake for lunch, snacks and evening meal. Let me know if this is ok or do i just have to grin and bear it? Thanks in advance!