Articles by Nick Tiller, PhD

Nick Tiller, PHD, MRES is an exercise scientist at Harbor-UCLA and author of The Skeptic’s Guide to Sports Science which was named one of Book Authority’s “Best Sports Science Books of All Time.”

50k After Your First Marathon, K-Tape & How Short Should Your Longest Run Be?

After my first marathon, would it be right to continue with a 50k ultra in three months? @asafmiller It wouldn’t be wrong. But whether you should run a 50k just three months after your fir...

Heart Recovery, Hyponatremia and Too Big to Run Ultras?

How long does it take for the heart to recover after a 100-miler? @droliviaaffuso This is an important and timely question, but it’s a very difficult one to answer directly. It depends how we define “recover” and w...

Calories, Counterpace System & Strength Training

How do I ensure I eat sufficient calories for my needs? (@jmbarbit) There are numerous challenges to overcome as an ultrarunner and one of the greatest, at least from a nutritional perspective, is consuming enough calor...

Cramps and DOMS, NSAID Use and Exercise Physiology

We asked readers to send us questions for an exercise physiologist. Here are a few of the questions and the answers that follow. When cramps and DOMS (delayed onset muscle soreness) come knocking at the door after an...