Dreams are mental experiences occurring during sleep. Most common during REM sleep when brain activity increases. Average 2 hours of dreaming per night. Can involve all senses and include first-person perspective
Healthy sleep requires at least seven hours per night. Sexual function involves four stages: desire, arousal, orgasm, and resolution. Around 33% of men and 45% of women experience mild sexual problems
Deep sleep (N3) is the deepest stage of nightly sleep. Body naturally cycles through deep sleep 2-4 times per night. First deep sleep phase lasts almost an hour, last 15 minutes
Sleep paralysis is temporary inability to move or speak during sleep transition. Hallucinations occur during sleep paralysis, affecting three out of four people. Hallucinations can be visual, auditory, olfactory, or tactile. Symptoms include inability to move, limited eye movement, and out-of-body experiences
Bright lights and upbeat music can trick brain into thinking it's daytime. Cool temperatures and fresh air help maintain alertness. Regular exercise and movement increase blood flow. Meditation and cold showers can clear mind and refresh
Feeling tired all the time is not normal and may indicate medical or mental health issues. Depression can cause fatigue, apathy, and listlessness. Symptoms include difficulty sleeping, waking up, and staying asleep