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ZenTri 631 - How to Face Your Fears and First Ride on Morf-Tech Folding Aerobars

How to face your fears to beat them forever, I ride the new prototype Morf-Tech folding aerobars, news, why you should learn to fight, and tempting alligators with children.


Why you should use maltodextrin instead of glucose or dextrose

Glucose is a simple sugar and you can only absorb so much before you feel sick. Maltodextrin is a starch and you can digest probably twice as much and still feel fine. Your stomach recognizes the number of molecules first, not the number of calories. Starch packs a lot more calories per molecule, as a long string of single sugars strung together, tricking the stomach and sneaking them through. Imagine eating 1,000 calories from jolly ranchers versus 1,000 calories from potatoes. Which one is going to make your stomach wretch with regret first?   

Glucose can be broken into two parts, and the part that's actually energy is dextrose. It's the right side of the molecule. "Dex" is latin for "right side". You can go buy dextrose powder no problem. So dextrose IS glucose, without being "glu"ed to the other side. 

If you string dextrose together as a starch so you can absorb more without getting sick, it's called maltoDEXtrin. It IS dextrose, which is the usable part of glucose. 

Your stomach needs X amount of water per molecule to digest sugars and starches. Since maltodextrin is a bunch of dextrose strung together as a single molecule, it needs half as much water or less to digest it than if you just ate simple sugars like sucrose, glucose, or fructose. The pain in your stomach when eating simple sugars is your body telling you it can't get any more water to all the molecules you put in it. Those sugars are pulling water in, but there's none left to give, so you cramp and puke. If you did maltodextrin instead, your stomach can sneak the molecules by with the same amount of water or even less, no problem. 

Conclusion: Just use maltodextrin instead of getting all into glucose or dextrose. It's already what you're looking for. It turns to glucose within seconds after it passes your stomach lining and doesn't make you sick. 


ZenTri 630 - UltraMan Hawaii Runner-Up Rob Gray


I interview Ultraman Hawaii Runner-Up Rob Gray to talk about how he trained and raced for the big event.  Also, a 12-hour fast, going vegan, swim toys, hemp protein powder, news, and much more.

Find out more about Rob here: 

UM face book page: 



ZenTri 629 - Cecilia Davis-Hayes, CTE, Seven Great Tips, and Swamp Running

Newly-minted pro triathlete Cecilia Davis-Hayes tells us how she balances her PhD work with training, her research into head trauma (CTE), and how to get faster by training with single-sport athletes instead of triathletes.

I cover SEVEN different tips and tricks triathletes can use to get more done.

I detail some new swim fins and give a swim workout.  I also take you running with me in the middle of a swamp with alligators during the Brazos Bend 100 ultra marathon.


ZenTri 628 - The Real Starky goes MINIMALIST, the meaning of life, and Derksen gets salty

Ben Hobbs (The Real Starky) talks with us about why he moved into an RV to go minimalist, Michael Derksen does his first salt water 2.4 mile race, and I dish on the REAL meaning of life.