GMS...

Also known as Grown Man Strength or Old Man Strength...is the number one reason why most 20-somethings get their asses kicked in the gym by a guy that could probably be their pappy. It's unexplainable, this guy is always talking about how bad his back hurts, or how bad his neck hurts...yet when he rolls with you not only is he going at 100mph, but you can't seem to break his fucking gorilla grip. How do you combat GMS? Well, you really can't...all you can do is hope and pray you never get paired with that old dude who was a Marine during Vietnam.