Water : One should either drink warm water or water at room temperature. If you have existing digestive problems, cold water can just make it worse.Make sure that you use a good water purifier. Squeeze lemon, wedges into your water for a good flavour.
Herbal teas : Caffeine-free herbal teas are an excellent form of fluids. Peppermint, chamomile, and caraway in particular improve digestion and reduce bloating. You can also go for green tea.
Vegetable juice : Vegetable juices are a great way of getting your daily dose of vegetables and fluids. Avoid canned juices and vegetable cocktails that contain high levels of salt. Celery, wheatgrass, cucumber, fennel, parsley, and other non-starchy vegetables are some excellent choices. Carrots tend to be sweet, so be sure to drink carrot juice in moderation. If you enjoy the taste of vegetable juice, a home juicer is essential for you.
Smoothies : A smoothie, made of a combination of fresh or frozen fruits, a scoop of protein powder and skim milk, is a great way to start the day. If you are used to coffee or something sweet in the morning, you may find that a power smoothie gives you more sustained energy.
Fruit juices : In general, it is better to eat fruit than drink it. In liquid form, the sugar in the fruit juice is absorbed into the bloodstream relatively quickly. So, it is better to try diluting fruit juice with water - one part unsweetened fruit juice to one to three parts of water. Choose fruits that are not high in sugar content.
Decaffeinated coffee : Coffee as a rule isn't the best drink and can dehydrate you. If you like to drink decaf, make sure that it is water processed. And use a small amount of milk if necessary, but keep minimum sugar, honey or artificial sweeteners in the coffee. Drink water after to keep yourself hydrated.