Stages Of Sleep

Question 1

NREM STAGE N1 - falling asleep

Answer 1

• heart beat and breathing slow down
• muscles being to relax
  Lasts a few minutes

Question 2

NREM STAGE N2 - light sleep

Answer 2

• heart beat and breathing slow down further
• no eye movements
• body temp drops
• brain produces “sleep spindles”
• last about 25mins

Question 3

NREM STAGE N3 - slow wave sleep

Answer 3

• deepest sleep state
• heart beat and breathing are at their slowest rate
• no eye movements
• body is fully relaxed
• delta brain waves are present
• tissue repair and growth, and cell regeneration
• immune system strengthens

Question 4

REM STAGE R

Answer 4

• primary dreaming stage
• eye movements become rapid
• breathing and heart rate increased
• limb muscles become temporarily paralyzed
• brian activity is markedly increased