I think the answer you are looking for is hemispheres.
Within a few minutes after inhaling marijuana smoke, a person’s heart
rate speeds up, the breathing passages relax and become enlarged, and
blood vessels in the eyes expand, making the eyes look bloodshot. The
heart rate—normally 70 to 80 beats per minute—may increase by 20 to 50
beats per minute or may even double in some cases. Taking other drugs
with marijuana can amplify this effect.
Apple seeds<span> contain a plant compound known as amygdalin. ... It is harmless when intact, but when the</span>seeds<span> are damaged, chewed or digested, amygdalin degrades into hydrogen </span>cyanide<span>. This is very </span>poisonous<span>and even lethal in high doses (4, 5).</span>