The best pre-workout cold brew delivers research-backed caffeine (3–6 mg/kg body weight) from clean ingredients — no artificial sweeteners, no proprietary blends, no neon powder. Bare Brew packs 320mg of caffeine from just two ingredients (cold brew coffee and water) with zero sugar, placing it in the dosage range the International Society of Sports Nutrition cites for exercise performance.
Your pre-workout has more ingredients than your post-workout meal. Time to fix that.
The supplement industry spent two decades convincing lifters they need neon-colored powder with 40-ingredient labels. Meanwhile, the actual performance research keeps saying one thing: caffeine dosage and timing drive acute performance gains. Everything else is marketing — or underdosed filler.
So I built Bare Brew around that research. Two ingredients. Cold brew coffee and water. 320mg of caffeine. Zero sugar. Zero artificial sweeteners. Zero proprietary blends.
Here is what the science says, how cold brew stacks up against every other pre-workout option, and exactly how to use it.
What the Research Says About Pre-Workout Caffeine in 2026
The International Society of Sports Nutrition (ISSN) position stand on caffeine recommends 3–6 mg/kg of body weight, ingested 30–60 minutes before exercise. For a 180 lb (82 kg) lifter, that translates to 246–492mg. Bare Brew's 320mg sits inside that research-backed range.
A 2025 systematic review and meta-analysis published in Frontiers in Nutrition analyzed 12 studies with 230 total participants and found that acute caffeine intake significantly improved both mean velocity (SMD = 0.42, 95% CI: 0.19–0.65) and mean power output (SMD = 0.21, 95% CI: 0.12–0.30) during resistance exercises — regardless of load. The effect was especially pronounced in men and habitual low-caffeine users.
A separate 2024 meta-analysis of meta-analyses confirmed caffeine supplementation enhances both muscular strength and muscular endurance across multiple exercise modalities.
Bottom line: 320mg of caffeine from cold brew coffee consumed 30–60 minutes before training places you inside the caffeine dose range used in that research. Individual response still varies.
Why Cold Brew Is a Better Pre-Workout Than Powder
Pick up a tub of C4 Original: beta-alanine, creatine monohydrate, L-arginine, anti-caking agents, sucralose, and acesulfame potassium. Now pick up Bare Brew: cold brew coffee and water.
Most active ingredients in powder pre-workouts are either underdosed below clinically effective levels or have weak evidence for acute performance benefits. The only ingredient with robust, replicated acute performance data across dozens of meta-analyses? Caffeine.
Cold brew also differs from hot-brewed coffee on one measurable point: cold brewing extracts fewer of the acids that hot brewing pulls from the same beans — research published in Scientific Reports found cold brew has a lower total titratable acidity than hot brew, though pH is comparable. That is a brewing-method property, not a promise about how it will sit before heavy compound lifts.
The Ingredient Transparency Problem
"Proprietary blends" on pre-workout labels legally allow companies to hide individual ingredient dosages. You know the total weight of the blend — but not whether the beta-alanine is dosed at 3.2g (clinically effective) or 0.5g (useless tingling). Cold brew has no proprietary blend because there is nothing to hide: coffee and water.
Pre-Workout Comparison: Bare Brew vs. Everything Else
| Product | Caffeine | Sugar | Total Ingredients | Artificial Sweeteners | Cost per mg Caffeine |
|---|---|---|---|---|---|
| Bare Brew Cold Brew | 320mg | 0g | 2 | None | ~$0.014 |
| C4 Original (1 scoop) | ~150mg | 0g | 15+ | Sucralose, Ace-K | ~$0.020 |
| Bloom High Energy | ~220mg | 0g | 12+ | Stevia | ~$0.018 |
| Celsius | ~200mg | 0g | 10+ | Sucralose | ~$0.015 |
| Monster Energy | ~160mg | 54g | 15+ | None (uses sugar) | ~$0.022 |
| Red Bull (12oz) | ~111mg | 37g | 10+ | None (uses sugar) | ~$0.030 |
| Ghost Legend V3 | ~250mg | 0g | 15+ | Sucralose | ~$0.016 |
| Black coffee (drip, 16oz) | ~190mg | 0g | 1 | None | ~$0.010 |
Cost per mg calculated from retail pricing as of August 2026. Competitor caffeine and sugar figures are per each brand's published label. Drip coffee assumes home-brewed.
Cold Brew vs. Energy Drinks as Pre-Workout
Energy drinks like Monster, Red Bull, and Celsius have become default pre-workout drinks for many gym-goers. Here is where they fall short:
Sugar loads: A standard 16oz Monster contains 54g of sugar — more than a Snickers bar. That is a large carbohydrate load to take on before training, and calories most people do not count.
Caffeine ceiling: Most energy drinks max out at 160–200mg of caffeine. For a 180 lb lifter targeting the ISSN-cited range, that is below it — meaning you either drink two cans (doubling the sugar and cost) or accept a lower dose.
Ingredient lists: Taurine, guarana, ginseng, B-vitamins in mega-doses — none of which have strong evidence for acute exercise performance at the doses used in energy drinks. They are there to justify the "energy" label, not to make you stronger.
Cold brew solves all three: 320mg caffeine, zero sugar, two ingredients.
Who Actually Needs 320mg Pre-Workout
If you weigh 120 lbs and are caffeine-sensitive, 320mg might be more than you need. Drink half the can (160mg) — still more than a Red Bull.
But if you are a 160–220 lb athlete spending $1.50–$2.00 per serving on pre-workout powder, 320mg from two ingredients lands in the range the research uses.
Powerlifters: A known caffeine dose with two ingredients and nothing else to account for.
CrossFitters and functional fitness athletes: One fixed dose instead of an unmeasured scoop.
Bodybuilders in contest prep: 20 calories and zero sugar — easy to fit into a tracked deficit.
Endurance athletes and runners: Clean caffeine for long runs, cycling, and Hyrox races, with no added sugar to manage at race pace.
Morning lifters: Replace the complicated shake-and-scoop routine with cracking open a can. Ready in zero seconds.
The Money Math: Cold Brew vs. Pre-Workout Powder
C4 Original costs roughly $1.00 per scoop for 150mg of caffeine. To reach the research-backed 3–6 mg/kg range at 180 lbs, you need two scoops — that is $2.00 and double the artificial sweeteners per session.
Ghost Legend V3: $1.50/scoop for 250mg. Closer, but still loaded with sucralose and a long ingredient list.
Bare Brew: $4.50 per can for 320mg from the 12-pack ($53.99). One can. No math. No measuring. No cleanup.
And with Bare Brew's Subscribe & Save, the per-can cost drops even further with automatic delivery on your schedule.
How to Use Cold Brew as Your Pre-Workout: The Protocol
Timing: Consume 30–60 minutes before training. Caffeine reaches peak plasma concentration approximately 45 minutes after ingestion.
Dose by body weight:
| Body Weight | Recommended Caffeine (3–6 mg/kg) | Bare Brew Dose |
|---|---|---|
| 120 lbs (55 kg) | 165–330mg | Half to full can |
| 150 lbs (68 kg) | 204–408mg | Full can |
| 180 lbs (82 kg) | 246–492mg | Full can |
| 200 lbs (91 kg) | 273–546mg | Full can (+ coffee if desired) |
| 220 lbs (100 kg) | 300–600mg | Full can |
Stacking: Take creatine monohydrate separately (3–5g daily, timing does not matter for creatine). Your pre-workout only needs caffeine, timed correctly. Adding creatine to your daily routine and caffeine before training covers the two supplements with the strongest evidence base in sports nutrition.
Hydration: Caffeine is a mild diuretic. Drink 16–20oz of water alongside your cold brew before training to stay optimally hydrated.
Fasted training: Bare Brew is 20 calories with zero sugar. Whether that fits your fasting protocol is up to you — see our guide: Does Cold Brew Break a Fast?
What About Caffeine Tolerance?
Regular caffeine users develop partial tolerance to some of caffeine's effects (like the "buzz" feeling), but the ergogenic (performance-enhancing) effects are more resistant to tolerance. The 2025 meta-analysis found performance benefits even in habitual caffeine consumers, though the effect size was larger in low-caffeine users.
If you want to maximize the pre-workout effect, consider cycling: reduce caffeine intake for 7–10 days before a key training block or competition, then reintroduce at your full dose on training days.
Frequently Asked Questions
What is the best pre-workout cold brew?
The best pre-workout cold brew delivers at least 200–320mg of caffeine from clean ingredients with zero sugar and no artificial sweeteners. Bare Brew meets all criteria with 320mg caffeine from just coffee and water — placing it in the ISSN-cited range for a 150–220 lb athlete.
How much caffeine should I take before a workout?
The International Society of Sports Nutrition recommends 3–6 mg per kg of body weight, consumed 30–60 minutes before exercise. For most adults, that translates to 200–400mg. Bare Brew delivers 320mg per can.
Is cold brew better than pre-workout powder?
For caffeine delivery, yes. Cold brew provides the only ingredient with robust acute performance evidence (caffeine) without artificial sweeteners, synthetic dyes, or proprietary blends. Cold brew also has a lower total titratable acidity than hot brew made from the same beans, per research published in Scientific Reports.
Does Bare Brew have sugar or artificial sweeteners?
No. Two ingredients: cold brew coffee and water. Zero sugar, zero artificial sweeteners, 20 calories per 12oz can.
When should I drink cold brew before working out?
30–60 minutes before training for optimal caffeine absorption. Caffeine reaches peak blood levels approximately 45 minutes after ingestion.
Is 320mg of caffeine safe before exercise?
The FDA cites up to 400mg per day as not generally associated with negative effects for healthy adults. At 320mg, Bare Brew sits under that. If you are caffeine-sensitive, start with half a can (160mg). Consult a healthcare provider if you have heart conditions or are pregnant.
Can I use cold brew for lifting and strength training?
Yes. A 2025 meta-analysis of 12 studies found caffeine significantly improved mean power output (SMD = 0.21) and mean velocity (SMD = 0.42) during resistance exercises — exactly the metrics that matter for lifting performance.
How does cold brew compare to energy drinks for pre-workout?
Most energy drinks contain 80–200mg of caffeine plus 25–55g of sugar. Bare Brew delivers 320mg with zero sugar and zero artificial ingredients. Energy drinks also cost more per milligram of caffeine.
Is cold brew good for endurance sports?
Published research on caffeine in endurance settings has reported lower ratings of perceived exertion; findings on substrate use are mixed and vary by individual and protocol. Cold brew also carries no added sugar, which is one less variable during sustained effort. Test any drink in training before racing with it.
What is the cost per mg of caffeine in Bare Brew?
At the 12-pack price ($53.99, or $4.50/can), Bare Brew costs approximately $0.014 per mg of caffeine. Compare: C4 Original ~$0.020/mg, Monster ~$0.022/mg, Red Bull ~$0.030/mg.
Related reading:
- Zero Sugar Cold Brew: The Complete Guide
- Strongest Cold Brew Coffee: Caffeine Compared
- How Much Caffeine Is in Cold Brew?
- Cold Brew vs Energy Drinks: The Real Comparison
- Why Powerlifters Are Switching to Cold Brew
- Does Cold Brew Break a Fast?
- Hyrox Athletes: Your Pre-Race Caffeine Strategy
Shop Bare Brew — 320mg clean caffeine, zero sugar, two ingredients.
