BONGS are the healthiest way to smoke.....the water filters out a vast majority of the tar, and it does a good job of cooling the smoke. in fact, other chemicals are filtered out too, but not the thc. the BONG is also the best way to conserve your weed and get your maximum stone on. just remember to never burn more of the bowl than you can inhale in one lungful. be efficient. change water frequently. peace peeps