Sleep. Sweet delicious sleep. Warm, safe, clarity regenerating sleep. In 2013, researchers determined that sleep is critical for flushing neurotoxins and other metabolic waste from the brain and spinal column. These toxins accumulate during the day as a result of normal brain and neurological processes. If not flushed away every night they begin to poison the brain, inhibiting clear thought, reasoning, and memory. This more than anything else explains the importance and the necessity of getting a quality night’s sleep. Anyone who has been awake over twenty-four hours doesn’t need the results of clinical studies to know that sleep is necessary for clear thinking.