Infradian Rhythm

• Infradian Rhythms


  Biological rhythm lasting longer than 24 hours
• Seasonal Affective Disorder


  Mood lowers during Winter season, improving in Summer due to lack of sunlight
• Menstrual Cycle


  28 day cycle with 6 days of fertility including ovulation, thickening of the womb and losing it

  • EP = Oestrogen and Progesterone
  • EZ = Pheromones
• (+) A03: McClintock


  Found 135 Women at University synced menstrual cycles with friend groups, due to the pheromones given off from EZ
• (+) A03: Stern + McClintock

  20 Women given pads from donor womans armpit to wipe on their top lips, found that they matched the donors menstrual cycle due to pheromones
• (-) A03: Trevathan


  Found that co-habiting lesbian couples did not sync menstrual cycles despite being around eachother