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Our sex is determined by chromosomes. A man has an XY chromosome and a woman has an XX chromosome. There are other combinations (involving...
Responsibility for contraception and abortion
The (contraceptive) pill, taken on a daily basis by a woman, contains hormones that stop her ovaries producing eggs. A condom, worn by the...
How the male and female sexual roles differ
Primitive life, such as bacteria, reproduce asexually. But most animals and plants reproduce sexually. Offspring inherit genes from both parents. Even in plants, the...
At puberty boys develop a reliable arousal cycle
From a young age, many boys already demonstrate a more active and outgoing personality than most girls. Boys enjoy physical activities such as sport...
Over time women often become focused on family
Female mammals are involved in grooming, feeding and affectionate play with their young. Female mammals are always smaller and more nervous than males. This...
Sexual responsiveness is a male characteristic
Male orgasm is not directly linked to reproduction, but ejaculation is required. The function of male orgasm is to trigger the ejaculation of sperm....
Sexual insults, bullying and habitual harassment
Young people should understand what makes a positive relationship and what makes a bad one. There are benefits and risks involved in relationships depending...
Sex without consent is rape regardless of intent
It’s important to appreciate that the situation where a man rapes random strangers is rare. These men (called rapists) specifically enjoy the violence of...
Intercourse is a territorial act of male dominance
In a society where men and women raise families together, intercourse is presented as a lovemaking act. But by looking at Nature we can...
Women do not need to be like men to be valid
Sex educators think women need to be educated about masturbation and the clitoris. Yet no man ever needs to be told about masturbation and...
Understanding the value of non-sexual intimacy
Sexuality is about our emotions and how we feel loved in our relationships with others. Although sex is often described in terms of eroticism,...
Why women cannot orgasm through intercourse
Male orgasm through intercourse is crucial to human reproductive biology.
(1) Intercourse is totally defined by male responses
Intercourse is a demonstration of the male arousal...
The mental focus required to achieve orgasm
Anyone who masturbates needs to use fantasy for arousal. Turn-ons are erotic concepts or images that motivate us to engage in sexual activity. We...
How we know that someone has had an orgasm
Orgasm is a subconscious response but we need to take conscious actions to achieve it. A responsive person knows when they have had an...
How women masturbate themselves to orgasm
Women may be mildly curious about genitals but they are not aroused by them. Neither are women hormonally aroused as younger men are. So...
How we know that female masturbation is rare
Kinsey concluded that masturbation was not only the quickest way for a woman to orgasm (4 minutes on average) but also the most reliable...
Women make conscious effort to respond sexually
With all the fiction surrounding women’s sexuality, it is important to appreciate that female sexuality has not evolved solely for the purpose of gratifying...
Why couples don’t discuss female arousal
Much of the sexual activity between heterosexuals is carried on without communication. Once intimacy has been established, by kissing for example, a man assumes...
Sex as a bargaining chip in loving relationships
When we are single, we can focus on our own selfish needs. But when we have a relationship with another person, we need to...
How a woman can interest a man in having sex
Sex occurs much more easily in the early stages of a relationship because being affectionate with each other provides the most natural lead-in to...
How a couple can bring variety to intercourse
Few women provide explicit erotic turn-ons. But most, at least initially, are affectionate. Demonstrating affection involves close physical intimacy and causes male arousal. When...
A man needs to make sex exciting for a woman
When women see men, they think of sex. You could equally well say that men think the same thing when they see women. But...
Women are often disappointed with casual sex
We are all living longer due to improved health and lifestyles. So ‘til death do us part’ is much longer than it used to...