look, this is whats been established:
achol is worse and so is tobacco
maijuana does have its negatives but none as significant
vaps, water bongs, and ingestion lessen these negatives.


oh, and seag420, the heart rate is increased only because your body has just been introduced to an excess amount of thc (meaning the body didnt make it). so the heart rate increases to get the thc out as fast as possible, this is why ppl get high after small amounts of weed, whereas tobacco it takes more and more to get the effect. also, you cannot compare weed induced heart rate increase to an exrcise induced increase, because when u exercise your is SOOO much faster, hence faster breathing, you can actually feel your heart pulsing without putting your hand over it. with weed you cant feel this pulsing but you know its there bcuz yer still alive. And even IF, when you're high (after your haert rate increase), you donnt get enough oxygen would u not feel tired or the need to sit and rest for a while? also, your heart does not get tired nor will it ever get tired, because its a cardiac muscle, just one of 3 kinds of muscles.
skeletal- provides the force of locomotion and other voluntary body movements.
smooth- lines the walls of the hollow structures of the body, such as the intestine, urinary bladder, uterus, and blood vessels. Its contraction, which is involuntary, reduces the size of these hollow organs.
cardiac- This type of muscle only exists in your heart. Unlike other types of muscle, cardiac muscle never gets tired. It works automatically and constantly without ever pausing to rest. Cardiac muscle contracts to squeeze blood out of your heart, and relaxes to fill your heart with blood.

in conclusion, weed is better. we'll leave at this becuase while debating over the net is fun, but it is also very pointless as nothing will come of it.