Related by context. Frequent words. (Click for all words.) 76 arousal 57 physiological 57 orgasm 55 libido 54 sexual gratification 54 intercourse 54 ejaculation 54 stress hormones 53 sexual 53 orgasms 52 sexual intercourse 52 sexual dysfunction 52 dopamine 51 oxytocin 51 cortisol 50 pheromones 50 erections 50 genitals 49 penis 48 stimulation 48 genital 48 hormonal 47 erectile dysfunction 47 hypothalamus 47 ovulation 47 erotic 47 sexually 47 endorphins 47 clitoris 46 serotonin 46 physiologically 46 intimacy 46 satiety 46 sex 46 olfactory 46 fMRI 46 genitalia 45 testosterone 45 amygdala 45 lovemaking 45 estrogen 45 cognition 45 physiologic 45 vaginal 45 carnal 45 masturbate 45 hormones 45 nicotine 44 norepinephrine 44 functional magnetic resonance 44 impulsivity 44 eroticism 44 hormone 44 heterosexual 44 masturbation 43 urinary 43 menstrual cycle 43 vagina 43 pelvic floor 43 cortex 42 stimuli 42 psychological distress 42 ghrelin 42 breasts 42 pheromone 42 lustful 42 sexual encounters 42 abdominal fat 42 auditory 42 masturbating 42 nerve endings 42 neurotransmitter 42 hot flashes 42 bladder 41 Testosterone 41 cravings 41 capsaicin 41 procreation 41 nipples 41 bodily 41 sexual fantasies 41 nitric oxide 41 depressive symptoms 41 saliva 41 neural 41 glands 41 Sexual 41 sexuality 41 urinary incontinence 41 anal sex 40 sensual 40 perspiration 40 voyeurism 40 rectal 40 hypnosis 40 respiration 40 reactivity 40 brain 40 Intimacy 40 brain scans 40 foreplay