I know exactly what you mean, and there are many things that factor into my evening energy. Here are a few that I use as a mental checklist, roughly ranked in o

I know exactly what you mean, and there are many things that factor into my evening energy. Here are a few that I use as a mental checklist, roughly ranked in order of impact: 1. Sleep: did I get enough high quality sleep for the past few nights? This is by far the most important. 2. Exercise: have I been exercising regularly? Weights and cardio? 3. Caffeine: what was my caffeine intake like during the day? Did I have a coffee-induced spike at 4 that is causing a down-swing when I get home at 7? Having more moderation and reducing caffeine after a certain hour can really help me here. 4. Breaks: did I take enough breaks during my working hours? If I forget to, I usually feel mentally drained after work. If I get the "lie down and not want to do anything" feeling in the evening, it's usually because I slacked on some combination of these four. For me it's usually sleep, which I've found to be the key foundation that makes the rest much easier to manage as well.