You might have a sleep disorder. The most common kinds are - Insomnia - a hard time falling or staying asleep - Sleep apnea - breathing interruptions during sleep - Restless legs syndrome - a tingling or prickly sensation in the legs - Narcolepsy - daytime sleep attacks Nightmares, night terrors, sleepwalking, sleep talking, head banging, wetting the bed and grinding your teeth are kinds of sleep problems called parasomnias. There are treatments for most sleep disorders. Sometimes just having regular sleep habits can help. 
What is (are) Sleep Disorders ?