India, Jan. 15 -- If you ran out of time for breakfast or can't make it to a cafe for lunch, are fluids good enough instead?You may find later on, you regret substituting liquids for solids so try to make space to eat. Berlin (dpa) - Sometimes your schedule may be so tight that you can't even squeeze in a sandwich. So what do you do when your stomach growls in protest? Why not simply down a meal replacement drink or shake? They're filling and supply your body with all the important nutrients - or so say their manufacturers. Is this true? The German consumer watchdog Stiftung Warentest examined six liquid meal replacements based either on milk, peas or oats. Its conclusion in a nutshell: "If you're in a hurry, they're better than currywurst ...