Does foam rolling actually work?

The pitch says your fascia is full of adhesions, knots, and scar tissue, and that rolling physically breaks them up, releases them, or smooths them out. The word release is doing a lot of unpaid labor in that sentence.

The modeling work estimates that deforming dense fascia, like the iliotibial band, requires forces beyond human tolerance: orders of magnitude past what body weight on a foam cylinder produces. Behm and Wilke study rolling favorably, and their narrative review concluded plainly that the evidence does not support the release mechanism. That makes the name self-myofascial release itself misleading.

Meta-analysis shows rolling produces short-term increases in range of motion without hurting performance, and pre or post-exercise rolling modestly reduces perceived soreness. The best-supported explanation is neural: pressure and slow input change the nervous system's tolerance for stretch, the same reason slow attentive movement feels good. The tissue is not being remodeled; the alarm is being turned down.