Anyone who runs or do any sports know that bass dictates the pacing of your activity. So it means serious sound will only get you bored.
lol btw I have those philips iems. Sound is something ordinary, as usual by philips. Not that bassy as the box says, nothing special really, it sounds good but what you're paying for is its ruggedness, not to mention its very comfortable to wear even if your ear is already full of sweat. What's good with is that you can easily clean it by washing in tap water.