A warm and nutritious drink for these winter months is hot mulled cider. It is very easy to make and makes the house smell wonderful as well.
Poor some apple cider (or apple juice) in a saucepan. Add some orange slices, some whole cloves, and one or two cinnamon sticks. Simmer on the stove for 5 to 10 minutes. Serve in mugs.
Hot cider is a great way to get some fruit into your diet, stay warm, and there is no caffeine. It is really good with fresh cake donuts.