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I’m an endurance athlete, how much protein do I actually need?

Almost every day, I see either: a) People who are unsure how much protein their body needs, or, b) People who don’t consume nearly enough protein This is very understandable, as recommendations for protein intake …

Antioxidants for athletes: friend or foe?

March 25, 2019 Jeff no comments.

If you’re a hard-training athlete who is even a bit curious about dietary supplements, it is likely that antioxidants (e.g. vitamin C, vitamin E, polyphenols, etc.) are something you may have wondered about. The logic …

Building an Iron Gut – Part II. GI Solutions

February 11, 2018 Jeff one comment.

In part 1 we talked about the potential causes of GI distress during exercise, now let’s look at some solutions! I like to think of these strategies in three distinct categories; things we can do …

Building an Iron Gut – Part I. Causes of GI Distress

February 11, 2018 Jeff no comments.

Imagine your perfect race. You’ve trained hard and went to sleep early for all those months. You have your Roka wetsuit, Zipp wheels, and a bike that is the triathlon-equivalent to the Batmobile. A beautiful …

Carbs and Running Economy: Data from the trenches

December 10, 2017 Jeff 4 comments.

Theories and discussion are nice, but putting ideas/concepts/principles into practice and seeing (positive) change is nicer. I want to share with you some really interesting before-and-after data on diet and running economy in a triathlete. For …

(Yet another) reason why low carb diets can make you slower

November 12, 2017 Jeff no comments.

Low-carb, high-fat. Teach your body to burn more fat so you can be more “efficient”, right? No. Low-carb diets ruin running economy. And cycling efficiency. I’ve written about this before: Fat Burning – Why it’s overrated …

Cycling Fluid Intake

October 18, 2017 Jeff no comments.

A brand new meta-analysis came out recently, aiming to figure the effects of drinking during endurance cycling. Here are the key points, as published in the paper: The effects are complex and need …

Look “under the hood” to fuel smarter

September 5, 2017 Jeff no comments.

Everyone who trains for a triathlon wants to get faster, but how do you know if your training and nutrition are aligned with what your body actually needs? I’ve written previously about the variations we …

I did Ironman to become a better dietitian (and here’s what I found out)

August 5, 2017 Jeff 2 comments.

2.4 mile swim, 112 mile bike, 26.2 mile run. While doing a race like this would sound like a terrible idea to 99% of people, as a sports dietitian I work mainly with the 1% …

Nutrition from Winter to Spring (video)

April 4, 2017 Jeff 2 comments.

Nutrition needs for athletes are greatly affected by things like temperature, humidity, altitude, and the length of the workout or race, as well as by the amount of time spent acclimating in a new environment. …