• It depends on your age or health I guess. I’m now 34 and I am learning some types of food will tend to make me sleepy while others will help me stay away and focused for longer (or maybe they just don’t make me sleepy?)

    Basically avoiding any type of heavy carbohydrates does the trick to me. Bread, spaghetti, potatoes, milk (in your coffee).

    If I do get sleepy, also not sitting straight after lunch helps, I recently got a standup desk and I stand the first 30 min after lunch for work, really helps.

    Also avoid any kind of sugar at all costs. Candies, dessert, ice cream, chocolate, sweetened coffee, and counterintuitively even some fruits such as bananas may give you a sugar crush.