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How caffeine improves physical performance

The dose and timing that deliver benefits without the jitters.

Robb and the LMNT Team <[email protected]>

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LMNT promotes the benefits of caffeine for physical performance, citing its reliable effects on endurance and strength. The brand shares a personal protocol for caffeine dosage and timing to enhance workouts. LMNT also invites readers to explore the research on caffeine's impact on physical performance in a featured article.

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Caffeine Benefits: Physical Performance

At least one afternoon a week, I hit a wall. A long stretch of office work, a meeting or two that ran long, and suddenly it's 4 pm with jiu-jitsu on the calendar in an hour.

So I reach for caffeine, just a quarter cup of coffee or an LMNT Lemonade Iced Tea. Fifteen minutes later there's a little spring in my step, and the guy who shows up at the gym is a lot sharper than the one who was slumped over the laptop.

Caffeine is one of the most reliable performance tools we've got, and like around 75% of competitive athletes, I use it strategically.

It helps to know what's happening under the hood. As you train:

A molecule called adenosine builds up and starts to create feelings of fatigue.

Caffeine blocks that signal so the same effort feels easier. You can push a little harder, a little longer, with less strain.

The dose is where most people go sideways. Here's the protocol I keep coming back to:

For most workouts: about 50 mg to 100 mg, roughly 15 minutes before I start. The effects typically peak in the middle of my session. 

For afternoon training: keep it to 25–50 mg so it doesn't follow me to bed.

For evening sessions: skip it, and let sleep handle recovery.

More caffeine isn't better. Caffeine metabolism and tolerance vary a lot from person to person, so your sweet spot may be lower than you'd guess. Start conservative, notice how you feel, and adjust from there.

In today's article, we explore the research on caffeine and physical performance:

The endurance edge, backed by meta-analyses (including how caffeine can shave nearly a minute off a 30-minute cycling effort and drop perceived exertion from a 7 to a 5).

How deliberate use of caffeine can help fuel multi-hour efforts like marathons and century rides, and when front-loading backfires.

How strength and power gains show up at doses as low as 76 mg — a fraction of what most pre-workouts pack.

Read the full article: How caffeine influences physical performance

Caffeine is one of the most effective tools we have to enhance physical performance but a little can go a long way. Dial in a strategy that works for you. You'll feel the difference when you get it right.

Robb and the LMNT Team

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HOW A PRO OPTIMIZES CAFFEINE INTAKE

Zach Bitter running up a set of stairs and cooling off by pouring water from his bottle over himself.

When the effort stretches into hours, a big hit of caffeine can work against you.

Get over-amped early and you risk going out too fast then paying for it later down the trail.

Endurance coach, ultramarathoner, and LMNT Partner Zach Bitter aims for something steadier instead: just enough caffeine to settle into a sustainable pace and lock it in, mile after mile.

Watch Bitter break down how he doses and times caffeine throughout a long race.

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How caffeine improves physical performance

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