iOS 6.0.2 is draining my iPhone 5 battery!

So last evening I recieved that notification to update to iOS 6.0.2. As it was going to fix the wifi bug, i was eager to update. Little did i know that a small update can have a big impact on battery life. For example, usually I don't burn through my battery unless i'm playing "intense" games. But today, while i was working out for a little more than an hour, i came out to find my iPhone's battery at 92% (As i left my house, i pulled my iPhone off the charger and didin't even get to use the phone until after my workout). Is there any fix for this?