When I play online poker, I try to keep it simple. A bottle of water is always on my desk because staying hydrated helps me stay focused during long sessions. For snacks, I usually prefer fruits, roasted nuts, or a light sandwich instead of junk food. Heavy meals make me feel slow, especially if I'm playing tournaments for several hours. I do enjoy a cup of coffee before starting a session, but I try not to drink too much because I don't want to become restless. Good food, enough water, and short breaks between sessions help me make better decisions at the tables.