Fuel UpEnergy Cafe

High-Protein Smoothies for Active Lifestyles

Christian FloresFounder, Fuel Up Energy Cafe3 min read

How much protein is really in a smoothie, when to drink one, and which Fuel Up blend fits your goal — from a health cafe in Bolingbrook, IL.

Green protein smoothie in a clear cup at Fuel Up Energy Cafe in Bolingbrook, IL

A protein smoothie should do two things: taste like fruit and actually hold you until your next meal. Most don't manage both. Ours carry 20g of protein and 5–10g of fiber in a 24 oz cup, with no added sugar and under 300 calories — so the fruit does the flavor work and the protein does the rest.

Here's how to pick one, when to drink it, and what makes ours different.

Why we blend with water, not milk

Every Fuel Up shake, smoothie, and bowl base is blended with water and ice — never dairy. That's a deliberate choice, and it changes the drink in three ways.

It stays light. A milk-based smoothie sits heavy, especially before a workout or first thing in the morning. Ours doesn't.

It's dairy-free by default, which matters for a lot of our regulars.

And the fruit actually tastes like fruit. Milk mutes berries and mango; water lets them come through.

The one exception is the 32 oz Muscle Shake upgrade, which adds whey isolate, casein isolate, and BCAAs for 36g of total protein. Those are milk-derived, so if you're avoiding dairy, stick with the 24 oz.

Shake or smoothie?

This is the question we get most, and the honest answer is: pick by what you're craving, because the nutrition is close either way.

Item Protein Fiber Added sugar Price (24 oz)
Protein Shake — dessert flavors like S'mores, Churro, Reese's Cup 24g plant-based None, natural fruit sugar only $10.25
Protein Smoothie — fruit-forward like Green Machine, Very Berry, Dragon Fruitty 20g 5–10g No added sugar $10.25

Either one upgrades to a 32 oz Muscle Shake for $13.35, which adds BCAAs and 12g of extra protein.

Bright pink protein smoothie in a clear cup with a lid at Fuel Up Energy Cafe in Bolingbrook

When a smoothie fits your day

Breakfast that drinks like fruit. We open at 6 AM, and a smoothie on the morning drive covers protein until lunch without a drive-through detour.

After a workout. 20g of protein and cold fruit is exactly what a hot session asks for. Make it a 32 oz Muscle upgrade for 32g on heavy training days.

The "I should eat more fruit" fix. Green Machine, Mango Pineapple, and Dragon Fruitty each carry 10g of fiber — the quiet reason you stay full.

Purple protein smoothie in a clear cup with a lid at Fuel Up Energy Cafe

Which blend for which goal

Most protein per cup: go 32 oz Muscle. If you want the highest protein on the whole menu, the Belly Buster hits 30g at 155 calories.

Most fiber: Green Machine, Mango Pineapple, or Dragon Fruitty at 10g.

Greens without a salad: Green Machine hides spinach in a mango-pineapple base. It tastes tropical, not green.

Timeless order: Strawberry Banana. Never misses.

Something that turns heads: Dragon Fruitty, for the color alone.

A note on allergens

Our smoothie bases are dairy-free, but a few things are worth flagging honestly. The 32 oz Muscle upgrade contains milk-derived whey and casein. Bowls include granola and almonds. Protein donuts contain cinnamon. And we work in a shared space, so cross-contact is possible — tell the team about any allergy and they'll walk you through the ingredients.

Where to find us

We're at 325 N Weber Road in Bolingbrook, open Monday through Friday from 6 AM to 6 PM and Saturday 8 AM to 5 PM. We serve Bolingbrook, Naperville, Romeoville, Plainfield, Lisle, and Woodridge — call ahead at (708) 556-9800 and we'll have your order ready, or browse the full smoothie lineup before you come in.

Questions we get asked

Smoothie or shake — which should I get?

Choose by craving. Fruit-forward means smoothie (Green Machine, Very Berry, Dragon Fruitty, Strawberry Banana); dessert-inspired means shake (S'mores, Churro, Reese's Cup). Protein is close either way — 20g versus 24g — so you really can't go wrong.

Do your smoothies have added sugar?

No. All the sweetness comes from real fruit. Every smoothie is listed at no added sugar and stays under 300 calories.

Are they dairy-free?

Our smoothie and bowl bases are blended with water and ice, never dairy. The one exception is the 32 oz Muscle Shake upgrade, which adds whey and casein isolate — those are milk-derived, so let us know if that matters for you.

How much protein can I get in one cup?

A 24 oz smoothie carries 20g. Upgrade to a 32 oz Muscle Shake for $13.35 and you're at 32g with added BCAAs. If you want the highest protein on our menu, the Belly Buster hits 30g at just 155 calories.

I've never been in. What should I order?

Tell us it's your first time — that's our favorite order. Give us your goal and the flavors you like, and we'll match you to the right cup in about 30 seconds.

Ready to try it?

Everything in this article is on the menu at 325 N Weber Road in Bolingbrook.

About the author

Christian FloresFounder, Fuel Up Energy Cafe. Christian opened Fuel Up on Weber Road in May 2023 to close the gap between the convenient choice and the healthy choice, and is passionate about helping busy people improve their health without giving up flavor.