This is not a real Nike commercial. However, it is an inspirational compilation that a Youtube user made. It's quite inspirational though and just might be enough to pump you up for your workout in the gym today. Leave nothing; meaning you should leave the gym with nothing left in your tank. Instead, leave everything you have out there in the gym. Leave with absolutely no regrets and knowing you gave it your all. You've got to know that you couldn't have done anything different than what you already did.