Dopamine acts on areas of the brain to give you feelings of pleasure, satisfaction and motivation. Dopamine also has a role to play in controlling memory, mood, sleep, learning, concentration, movement and other body functions.
Your body makes it in the liver and kidneys and stores it in the skeletal muscles, heart, brain, and sperm. Usually, your body can make all the carnitine it needs, even vegetarians.
L-carnitine may help increase weight loss and fat burning. Studies also support its use for health, brain function, and disease prevention. (weight loss study)
brain cells produce waste, which needs removing.
Scientists now believe slow electric waves during sleep let neurons synchronize and pump out the waste.