Dr. Amir Khan, a well-known doctor and television personality, has shared a technique called cognitive shuffling to assist those who struggle with sleep. He emphasizes the importance of sleep for health, noting that insomnia can increase the risk of obesity, heart disease, and diabetes. Cognitive shuffling involves thinking of a neutral word, such as 'bed', and generating other words that start with each letter of that word, thereby distracting the mind from racing thoughts. Dr. Khan explains that this method can help signal to the brain that it is safe to sleep, contrasting it with traditional methods like counting sheep. He encourages individuals to try this technique if they have trouble sleeping and to consult a healthcare professional if sleep issues persist. The NHS suggests that adults need between seven and nine hours of sleep each night, while children require even more, highlighting the significance of addressing sleep problems for overall well-being.