What can be healthier than nourishing your system with milk and bananas? Even if you don't have time to drink it, carry it in a small bottle and sip it while travelling to your office.It is very easy to prepare this. Only two ingredients: milk and banana. You can also be more creative. Add any flavor to it or add some protein powder if you are someone who wishes to lift weights. You can consume it as a post-workout shake as the proteins and the carbs in the shake strengthen your muscles and energise you.