yeah my JKD instructor had us all get 16 oz gloves, after you get used to them,. when you take them off you feal like you could just go all day. Also if you train with the added weight on your hands it has two advantages, one you will tend to hit harder because you are used to accelerating the extra weight, and two you will protect your knuckles a little better when hitting a bag, even with wraps and bag gloves you can still cause some dammage to your hands from long term use of a bag.. of course some people don't see any dammage..