For everyone cannabis will affects differently. If you are new to cannabis you might have some questions.

Users get different effects from different strains and methods of consumption. Affects are also different if you are a new user or more experienced user.

Marijuana comes from the hemp plant 'Cannabis sativa'. It has an active ingredient called THC (tetrahydracannabinol) that makes you feel high. THC and other compounds in marijuana can also affect the way your body works.
When coming down from the high, users may feel depressed or extremely tired.

Time Marijuana Affects Stop

No matter how you consume marijuana it affects almost every organ in your body, nervous system and immune system. Usually the effects will stop after 3 or 4 hours.

Cannabis Experiences

Pleasant experiences with cannabis are by no means universal. Some people experience anxiety, fear, distrust, or panic instead of relaxation and euphoria. These effects are more common when a person takes too much, the marijuana has an unexpectedly high potency, or the person is inexperienced.

Marijuana reaches the same pleasure centers in the brain that are targeted by heroin, cocaine and alcohol.

If you don't know how cannabis will affect you, try to start with a low dose and ask for advice.