While there is no clinical research to suggest that cannabis can help in controlling symptoms of REM Sleep Disorder, it is believed that cannabis may be useful in treating this condition. Consumption of a THC-dominant strain reduces the REM sleep time and thus reduces the dream time that causes involuntary muscle movement. Since endocannabinoids in the brain play a major role in the formation of neuron receptors, cannabis can help restore the chemical imbalance in the brain.