Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Headphones never stay in my ears while working out.  How do these withstand running/lifting and sweating?
Document: So I've been using my Shure headphones for working out (lifting, biking, jogging) for years. Before running became the craze it is and all these companies began designing (good) sport-specific equipment. The Shure were ear-buds that block sound out and had foam-like inserts. I like these a lot. They stay in my ears well, the sweat doesn't matter (and I sweat a LOT) and they sound good.
I've been through at LEAST a dozen different types of in-ear headphones from super high price points to dollar deals. I've spent upwards of $200 looking to find the perfect earphones to fit my smaller ears while running and not having to constantly fight with them to stay where they belong. Normally, most earphones start to come out of the ear while sweating (or some brands even before then) and refuse to stay put.
Fits in my ears perfectly and never moves. The design looks weird at first but once you put them on they're very comfortable. I hardly notice they're there and they always feel very solidly in place even if I get sweaty while running or working out.
I really like these headphones; they have great sound, they stay in my ears, they have not failed due to my sweating in my workouts and they work very well.
I'm an audiophile, and I got sick of crappy exercise headphones. These puppies stay set in the ear during running, biking, lifting, or whatever, and particularly if you run the slack through a hat or the like. They deliver superb sound quality, to the point where I prefer them for casual listening over anything but my big open cans. And with the good firm fit you can keep the volume low to prevent ear fatigue.
If you're anything like me you've been looking for a sweatproof/waterproof pair of running headphones that won't fall out. I've used the Sony MDR-AS20J, I've used the Phillips around the ears padded ones, and I've used the headphones from all of my smartphones, iPods, and other tech devices.Just got these headphones in this afternoon and immediately had to go for a run with them. Usually when I start sweating headphones are falling out, doesn't matter if I change the ear adapters or not.
Before I start the review, I would like to let you know who this is coming from. I'm a twenty something year old college student who likes to spend time in the University Wellness Center. I ordered these headphones because I wanted something that would stay in my ears at the gym. Also, I really needed something that could stand up to me sweating while I workout.In both those aspects, these headphones excel. When tugged on, I'd lose my phone before these headphones would come out of my ear.
Great sounding headphones for working out. I've used these on the treadmill, elliptical, and weight lifting with no issues at all. Sennheiser knows how to make a great headphone (my 4th pair from them) and Adidas knows the exercise side. Together they make an awesome headphone for the gym.
These headphones are great for running outside or the gym. They allow just a little peripheral sound to be safe outside. I have small ears and have never been able to keep regular ear buds in my ears but these don't budge!
I wear them when practicing drums beneath ear protection. I also wear them to the gym and when I go running. They never fall out or fill with sweat. I've gone through at least a dozen pairs of ear buds that either sounded terrible, were uncomfortable, fell out regularly when running, or eventually stopped working due to sweat at the gym. These little guys do it all!
Answer: I find these stay in pretty well while running - and I sweat profusely.  The "two points of contact" design helps a great deal.