I bought a new set of irons today and was hitting on a simulator at Golfsmith and was swinging a 6 iron. My swing speed was on average about 80mph but I feel like for a 31 year old guy that I should have a faster swing speed like 85 or so. Are there any drills to get a faster swing speed? I know there are some exercises you can do but looking at drills. I'm working on starting the swing with the lower part of my body to increase this but was wondering if anyone has any ideas?