I think most people know this, but naps aren't accepted in the workplace.

I function much better on 6h at night and nap after lunch than 8h at night, but society forces me to stay awake after lunch. I've even thought about looking for remote jobs, just to be able to have an afternoon nap.

Since becoming a father, I’ve started taking naps when feeling low on energy and let me tell you, that stuff is incredibly powerful. I lie down in a dark room with a timer set 40 minutes into the future, drift off and reappear with my energy meter glowing.

If you avoid bread, pasta, rice and potatoes in favor to beans, peas, lentils and vegetables, the after lunch energy dip is much less pronounced. You also tend not be hungry in the middle of the afternoon.

Have you heard of nappuccino by dan pink ?