Mint. So gum, candies, essential oils, the mint leaves, etc. all help with energy levels. Ginsing and a few other herbs help with energy levels. Just make sure you do proper research before using oils or herbs.

Granola snacks with low sugar really boost my day up. Also fruit like dates or dried cranberries with walnuts help me get through the day

Apples help too

Make sure you get a good healthy meal and plenty of water, and back some nuts for a snack (if you're not allergic and not worried about the fat in the nuts)

Try a typical over the counter dose of vitamin d or talk with your doctor to check your levels (basic blood draws)

Energy can be tied to many things. So it’s worth making sure your magnesium, vit d, other nutrients and sleep are on track. If those are, your issue might be tied to stress management. You can also get cortisol tests that will tell you if your out of wack. Often times when they are people can feel more exhausted. DHEA and prégnenalone really help with that. But you do need to dose those correctly. I saw a difference in 10 days.