From cramming for finals to late-night library sessions — what to eat when you need to focus
It's 11 PM. You're on the fourth floor of the W.E.B. Du Bois Library. Your exam is in 10 hours, and you've still got three chapters to go. The vending machine downstairs has nothing but stale chips and mystery candy from 2024.
Sound familiar?
As a snack store located 15 minutes from UMass Amherst, we've seen generations of students come through StackCart looking for the perfect study fuel. We've heard the stories. We've seen the desperation eyes. And we've done the research.
Here's everything UMass students need to know about snacking your way to academic success.
The Science of Study Snacking
Before we get into specific recommendations, let's talk about what actually helps your brain perform:
What Your Brain Needs:
- Glucose — Your brain's primary fuel source
- Protein — For sustained energy and focus
- Omega-3 Fatty Acids — Supports cognitive function
- Antioxidants — Protects brain cells from stress
- Hydration — Even mild dehydration hurts concentration
What to Avoid:
- Sugar Crashes — Big spikes followed by bigger crashes
- Heavy Foods — They divert blood to digestion, making you sleepy
- Too Much Caffeine — Anxiety doesn't help test performance
S-Tier Study Snacks (The Brain Food)
Mixed Nuts
The ultimate study snack.
Almonds, walnuts, cashews — any combination works. Nuts provide protein, healthy fats, and steady energy without the crash. Walnuts specifically contain omega-3s that support brain health.
Pro Tip: Get unsalted if you're going to crush a whole bag. Salted nuts will make you thirsty and require bathroom breaks.
Dark Chocolate
Yes, chocolate counts as brain food.
Dark chocolate (70%+ cacao) contains caffeine, antioxidants, and compounds that improve blood flow to the brain. Studies show it can improve focus and mood.
Warning: Milk chocolate and white chocolate don't count. The sugar content cancels out any benefits.
Beef Jerky / Turkey Jerky
Protein bomb for the focused.
Jerky is pure protein with minimal carbs — perfect for sustained energy without sugar crashes. It also requires chewing, which some studies suggest helps with focus and stress relief.
Greek Yogurt
If you have fridge access.
High protein, probiotics for gut health (which affects brain function — the gut-brain connection is real), and satisfying enough to keep you full without making you sleepy.
A-Tier Study Snacks (Very Good Options)
Popcorn
Whole grain you can mindlessly munch.
Plain or lightly salted popcorn is a whole grain that won't spike your blood sugar. The act of eating it handful by handful can be meditative during long study sessions.
Best Options: SkinnyPop or Boom Chicka Pop
Protein Bars
Convenience in bar form.
Not all protein bars are created equal. Some are glorified candy bars with 20g of sugar. Look for options with 15+ grams of protein and under 10g of sugar.
Good Choices: RXBARs, Quest Bars, ONE Bars, Think! Bars
Cheese and Crackers
The classic combo.
Cheese provides protein and fat; crackers provide carbs for quick energy. Together, they're satisfying without being heavy.
Energy Drinks (In Moderation)
Caffeine, but make it cold.
Sometimes you need the boost. We get it. The key is moderation — one energy drink helps; three energy drinks gives you heart palpitations and anxiety.
Better Choices: Celsius (cleaner ingredients), Ghost Energy (solid caffeine), Alani Nu (lower caffeine, tastes good)
B-Tier Study Snacks (Decent in a Pinch)
Granola Bars
Mixed bag territory.
Some granola bars are basically cookies. Others are legitimately healthy. Read the label.
Better Options: KIND bars, Nature Valley Protein, CLIF bars (for carb loading)
Pretzels
Crunchy, low-mess, not exciting.
Pretzels are fine. They're salty, they're crunchy, and they won't leave grease on your textbook.
Level Up: Pair with hummus or peanut butter for protein.
Peanut Butter (With Anything)
The universal study fuel.
Peanut butter on crackers, on apples, on celery, straight from the jar at 2 AM — it all works. High protein, healthy fats, satisfying.
Snacks by Study Scenario
The Library All-Nighter:
- Trail mix (sustained energy)
- Dark chocolate (mood boost)
- Beef jerky (protein)
- Water (hydration)
- One energy drink (maximum one)
The Quick Cram Session (2-3 hours):
- Apple with peanut butter
- Greek yogurt
- Small dark chocolate bar
- Coffee or tea
Group Study Session:
- Popcorn (shareable)
- Cheese and crackers
- Fruit snacks
- Mixed nuts
Exam Morning:
- Light, easily digestible
- Banana
- Granola bar
- Yogurt
- Not too much caffeine (jitters don't help)
The StackCart Study Snack Haul
When you're doing a snack run before finals week, here's a sample cart:
Under $20 Study Kit:
- Mixed nuts (large bag)
- Dark chocolate bar
- Beef jerky
- Cheese crisps
- Trail mix
- Energy drinks (2-pack)
Under $30 Study Kit:
- Everything above, plus:
- Protein bars (variety)
- Popcorn
- Hummus cups
- Fresh fruit
Where UMass Students Shop
StackCart is located at 77 West State St, Granby — about 15 minutes from campus via Route 116. We're open late during finals season and stock everything in this guide.
Why Students Come to Us:
- Better snack variety than campus stores
- Lower prices than CVS/campus markup
- Energy drinks, drinks, and now beer/wine (for after exams)
- Actually good snack selection
Plus, a drive to Granby is a study break. Sometimes you need to get off campus to reset.
FAQ: Study Snack Questions
What's the best snack for concentration?
Mixed nuts or dark chocolate. Both provide sustained energy and brain-boosting compounds without sugar crashes.
How often should I snack while studying?
Every 1-2 hours for light snacks. Your brain needs regular fuel, but constant eating diverts blood to digestion.
Should I avoid sugar completely?
No, your brain needs glucose. Just avoid big sugar spikes (candy, soda) in favor of complex carbs and natural sugars (fruit, whole grains).
How much caffeine is too much?
300-400mg per day is generally safe for adults — about 3-4 cups of coffee. More than that can cause anxiety and hurt concentration.
What should I eat the morning of an exam?
Something light with protein: yogurt, eggs, oatmeal with nuts. Don't eat anything heavy that might make you sleepy.
Can I bring snacks into the library?
Du Bois Library allows food in most areas. Check the specific floor/room rules. Avoid messy/smelly foods as courtesy.
StackCart is UMass students' off-campus snack destination. We're at 77 West State St, Granby, MA — a quick drive from Amherst. Stock up before finals at stack-cart.com or come see us in store.
Good luck on your exams!