File:Vintage Biomate Handheld Biorhythm Calculator, Certified by the Japan Biorhythm Association, Circa 1970s (11574465133).jpg - Wikimedia Commons
Biorhythm Calculator
Biorhythms
Has anyone looked at their biorhythm compatibility with their twin? I compared it to ex's, friends and family members rhythms and no one else is as close to mine as his. Just