In my opinion, no. Will it lose a little nutritional bang over the course of a few hours? Maybe, but that afternoon juice is still much, much more nourishing and hydrating than soda or coffee. I store my second helping in a mason jar filled to the very top of the glass and seal it with a lid to keep out as much air as possible (oxygen eats away at the nutrients and enzymes in your green drink).

If you’re buying from a store, fresh is best! Fresh juices have the most health benefits including enzymes, antioxidants, vitamins and minerals. Most quality juice companies will have the date it was made on the label, not just the expiration date. Avoid pasteurized juices when possible. An unpasteurized, pressed juice can last up to 72 hours, while a juice made with a centrifugal juicer should be consumed within 24 to 36 hours. All juices should be refrigerated.