The Tune Up Blog

Fuel Notes

Practical, evidence-based fueling, hydration and recovery strategies for endurance athletes.

Fasted Morning Rides Aren't Free: What "I Can Get Away With It" Is Costing You

A lot of the athletes I work with tell me some version of the same thing about early morning workouts: they can get away with it. An hour or ninety minutes on the bike or the trails with nothing beforehand,...

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Should Your Nutrition Change With Your Training? How to Fuel Rest Days, Easy Weeks, and Big Blocks

“Historically I literally just have had one set of targets.”

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What to Eat After a Long Ride When You Don't Have Time (or Appetite) for a Meal

“I got off the bike at 1, and I was hangry at 5… I’ve made a mistake.”

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What to Eat Before a Workout or Race, and How Close Is Too Close?

“I’ve heard historically, pre-race, you should be eating 2 to 3 hours before… What is too close?”

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Is Your Cramping From Low Electrolytes, or Something Else?

“My whole life I’ve had cramping issues, especially past two hours of endurance activity… I’m just scared at this point to do anything over two hours.”

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How to Calculate Your Sweat Rate at Home (All You Need Is a Scale)

“I always weigh myself before, and I lost nine pounds of body weight on a five and a half hour effort.”

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Salty Sweater or Heavy Sweater? Why the Difference Changes How Much Sodium You Need

“I don’t like pickles. I don’t like the taste of pickle juice, but for some reason it was the only thing that was working.”

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How to Fuel the First Hour of a Gravel Race Without Falling Behind

“I do think that first hour of racing is quite tough, because… I’m racing, and so you forget about things.”

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What Happens When You Take In More Carbs Than Your Gut Can Handle?

“I was in this vicious cycle of my stomach being upset, not wanting to take carbs, and just forcing my carbs down because my legs were dying.”

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How Many Carbs Per Hour Do You Actually Need?

“I feel like I’ve heard 60, I’ve heard 90, someone said 120, but then you might deal with stomach problems.”

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Fueling Debt: The Cost You Don't Feel Until Later

Most fueling mistakes announce themselves immediately. You skip lunch; you feel it by 3 pm. You bonk on a ride; you know exactly why.

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The 3 Fueling Windows Every Athlete Misses At Least One Of

If you asked most athletes whether they fuel their rides, they’d say yes. They ate breakfast. They grabbed a gel mid-ride. They had dinner after. Boxes checked.

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