For me it didn't fall out,the earplugs are actually similar to apple 's, you can also use the cord clip to clip it on the clothes on the back neck to avoid easy-fall off. Of course, the earmuffs in the accessories are as well a good choice. hope this helps you.
These are a great pair of headphones, especially for the price. They fit perfet and do not agrivate my ears. The sound quality is good, they stay place during running and jumping and battery life so far is awesome.