If you enjoy a cup of morning Joe, it’s unlikely it will affect your sleep at night. But that afternoon mocha latte might. Caffeine found in coffee, tea, soda and chocolate stimulates our brain and makes us feel more awake. Stick with water and caffeine-free beverages in the afternoon. Limit evening fluid intake to avoid middle-of-the-night bathroom visits. Smoking late at night and drinking alcohol will also cause you to toss and turn.