How the Beat the 2PM Energy Crash
- Gabby Kane, MS, RDN, CSSD, LD
- Aug 22
- 3 min read

It’s mid-afternoon: You’re staring at your screen, your eyes feel heavy, and your brain is begging for caffeine or something sweet.
Sound familiar?
That 2PM energy crash isn’t just “normal tiredness” — it’s a biological chain reaction to what you ate for lunch (and sometimes, what you didn’t eat).
The Science Behind the Afternoon Energy Crash
The afternoon energy crash typically happen because of the following:

Low Protein, Low Fiber Meals Spike Blood Sugar.
Meals or snacks heavy in refined carbs and low in protein/fiber cause a rapid rise in blood sugar.
Rapid Drop in Blood Sugar = Fatigue.
Once insulin clears glucose from your bloodstream, your blood sugar can plummet. That drop leaves you feeling tired, unfocused, and craving quick energy foods like sweets or chips.
Dehydration or Underhydration.
Even mild dehydration can cause fatigue and poor concentration — and it’s easy to be slightly dehydrated by mid-afternoon.
Skipping Lunch Altogether.
Going hours without eating - often for the sake of more productivity - can cause your blood sugar to drop too low, leading to fatigue, irritability, and a bigger appetite later in the day (hello hanger). This often results in overeating at dinner or grabbing high-sugar snacks for quick energy — which just continues the crash cycle.
TLDR: if you skip lunch, or your lunch isn’t balanced, you’re setting yourself up for an energy rollercoaster.
How to Stay Energized All Afternoon
1️⃣ Take a Real Lunch Break
Step away from your desk and give yourself permission to fuel your body. The work will still be there in 15 minutes, but your energy, focus, and productivity will be far better if you eat, especially without distraction. Skipping or rushing through lunch just sets you up for an energy crash and overeating later.

2️⃣ Have at least 30g of Protein
Protein slows the digestion of carbs, keeping your blood sugar more stable. Examples: grilled chicken, turkey, tuna, tofu, edamame, or a hearty lentil salad.
3️⃣ Include Veggies + High-Fiber Carbs
Aim for at least 1 cup of veggies (2 is better) and choose “smart carbs” with fiber like lentils, quinoa, beans, or berries. Fiber keeps blood sugar steady and supports digestion.

4️⃣ Hydrate Before You Eat
Drink 16 oz (about 500 mL) of water before lunch to help maintain energy and focus. 💡Pro tip: this is a great practice before every meal!
Sample High-Energy Lunch Ideas
Not sure what to plan for lunch? Try one of these tasty options:

Mediterranean Salmon Bowl: Quinoa + salmon + cucumber, tomato, and bell pepper + olive oil dressing. Really load up on those veggies!!
Lentil Chicken Salad: Lentils + tomatoes + feta + arugula + grilled chicken.
Turkey & Veggie Wrap: High fiber wrap + turkey + spinach + roasted red peppers + hummus.
Tofu Power Bowl: Leafy greens + tofu + eggs + assorted veggies + diced avocado.
References
Jenkins DJ et al. Glycemic index of foods: a physiological basis for carbohydrate exchange. Am J Clin Nutr. 1981;34(3):362–366. https://doi.org/10.1093/ajcn/34.3.362
Benton D, Young HA. Do small differences in hydration status affect mood and mental performance? Nutr Rev. 2015;73(Suppl 2):83–96. https://doi.org/10.1093/nutrit/nuv045
Latner JD, Schwartz M. The effects of a high-carbohydrate, high-protein or balanced lunch upon later food intake and hunger ratings. Appetite. 1999 Aug;33(1):119-28. doi: 10.1006/appe.1999.0237. PMID: 10447984. https://pubmed.ncbi.nlm.nih.gov/10447984/
Want to Stop the Crash for Good?
I can help you design meals that fuel your body all day without the crashes or cravings. Book your complimentary consultation call here and let’s create a plan that works for your lifestyle.