CBN, or cannabinol, is a compound found in cannabis, but it doesn’t cause the same "high" that THC does. If you’re new to CBN, think of it as a much milder version of THC. While THC binds strongly to receptors in the brain that create the feeling of being high, CBN has a much weaker effect, making it unlikely to cause any intoxicating feelings (Mr. Hemp Flower)(Fig & Thistle).
One of the main reasons people are interested in CBN is its potential to help with sleep. It’s known to have sedative properties, which means it might help you relax or fall asleep easier. However, CBN seems to work best when combined with other compounds like THC or certain terpenes, rather than by itself (Luna Technologies Blog).
In short, CBN won’t make you feel high, but it might make you feel relaxed or sleepy.