You're most like experiencing Postprandial somnolence, commonly called a food coma. If you'd like to avoid the after lunch energy dip, here's a few key pointers

You're most like experiencing Postprandial somnolence, commonly called a food coma. If you'd like to avoid the after lunch energy dip, here's a few key pointers: (1) Do not skip breakfast (2) Eat more meals in the day, but eat a smaller portion for each meal. (3)Foods rich in protein and/or salt are more likely to cause sluggishness. Include fruit and vegetables, especially roughage, in as many meals as you can. (4) Make sure you are sufficiently hydrated (5) Do something physically active after eating a meal. You can try walking, a 7 minute workout, stretching, pushups, etc. It's best to be just slightly out of breath, but not sweating. One company that I worked for in the past had a nap room. Since I'd usually stay later at work to avoid traffic, whenever I felt sleepy after lunch, I'd make use of it just take a nap. I was much more focused and productive afterwards. I hate that feeling of fighting to stay awake at work