by Marissa Stephenson
Tom Rafalovich So, you guys, Spinning does cause bulk -- but in terms of your calorie burn. Your confidence. Your love of Capital Cities "Safe and Sound" remixes.
But what it really, truly, despite-the-copious-hoopla-from-this-week does NOT do is bulk your thighs.
We were tempted to end our post with that, but we want you to know why your Flywheel class won't give you Hulk legs. So we asked exercise physiologist Michele Olson, Ph.D., professor of exercise science at Auburn University Montgomery (and our very own Dr. Abs) to lay it out:
See more: 5 Simple Steps to Cellulite-Free Skin
"You have two types of muscle fibers; one type are endurance fibers. When you do aerobic exercise, like Spinning, you use these fibers," Olson says. OK, easy so far. "These fibers can become more fatigue-resistant from doing activities like Spinning and running [aka, it feels easier to do the same workout], but they do not bulk. You have to lift heavy weights doing multiple sets to Read More »from SELF Exclusive! the Truth on Whether Spinning Bulks Up Your Legs or Not