Low-Carb and CrossFit: Delauer, TDC, and Mike G

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ByCrossFit HealthSeptember 4, 2022
Found in:220905

In this interview, Thomas DeLauer, Dave Castro, and Mike Giardina discuss performance on a low-carbohydrate diet and Thomas and Dave’s 35-mile ruck. The first part of the video digs into the appropriateness of a low-carbohydrate diet while trying to perform well in CrossFit. Dave Castro shares some of his own experiences training on a low-carb diet, explaining how his performance didn’t change much but he felt much better overall. Thomas DeLauer provides some strategies for using carbohydrates effectively to improve performance while on a low-carbohydrate diet, but he also explains that most people entering the CrossFit gym could benefit from strict adherence to a low-carb approach to improve their metabolic flexibility.

The second half of the interview digs deep into Thomas and Dave’s 35-mile ruck while fasted and wearing a 35-lb pack. The two of them go back and forth as they discuss the dietary protocol prior to starting the ruck, the plan to avoid cramping, the science behind different “schools” of fasting, ketone production and its impact on performance, and some of the mental and physiological responses to doing an enduring event without taking in any calories. If you want a behind-the-scenes look at Thomas and Dave as they trudge through the 35 miles, click here.

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David Taylor
September 12th, 2022 at 2:21 pm
Commented on: Delauer TDC Mike G

Interesting experiment! Sorry about all the foot issues.


Several years ago, at age 57, I did a 27 mile remote mountain hike with my son, both carrying 40 lb packs. It started at 8,200' elevation, and went up to 13,100' at one point, and finished at 10,200'. 8,200' of ascent. Neither one of us had any feet issues - no hot spots, no blisters. The keys were two-fold, in my opinion. First, we wore hiking boots, tightly laced, which helped immobilize the foot from slipping around inside against the bottom of the boot. Second, and more importantly, we wore *two* pairs of socks, with the inner layer being a thin, soft silky slippery liner. That way the two socks rubbed off each other, instead of the sock rubbing against the foot. You can find them most anywhere - search for "sock liners for hiking."


David T. M/63/5'8"/175

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