Marijuana is easily grown so it can be found anywhere from secluded farmland to urban basements. Intoxication peaks at half hour, with acute effects lasting up to four hours after ingestion. In new users, heart rate is elevated, but experienced users don't experience this effect.
Research indicates that brain cells used for short term memory are damaged.
The body will tire more quickly, be less productive, and require more energy under the influence of marijuana. An estimated 40,000 joints are required for a lethal overdose to occur. However, the body prevents OD long before that level is reached by falling asleep. Decrease in testosterone levels in men. Increase tar build-up in the lungs.