“20 years ago, when you asked ‘What gets in the way of your performance or effectiveness?’ the answer would've generally been cognitive,” says Adam Kingl, the co-author of Executive Eats: the cookbook for a better working life. It’s usually things like, ‘I just don't have enough energy, and therefore I'm not effective’.” And it gets you on the metabolic roller coaster; now you're getting these energy spikes followed by energy crashes. But some treats can help with destressing“One of the things that we probably all could be eating more of is dark chocolate.