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Speed Sex (Portuguese Edition) by [Dorothy, Karen] Kindle $ Read with Kindle Unlimited to also enjoy access to over 1 million more titles $ to buy. Buy Hi-Speed Sex 3 (Toni RIbas - Black Label & Private) from Amazon's Movies Store. Everyday low prices and free delivery on eligible orders. As many men get older, they wonder if sex is a good form of exercise or if walked on a treadmill in the lab and during private sexual activity at home. On an intensity scale of 1 to 5, with 5 being the highest, men evaluated.

Buy Hi-Speed Sex 3 (Toni RIbas - Black Label & Private) from Amazon's Movies Store. Everyday low prices and free delivery on eligible orders. Speed Sex (Portuguese Edition) by [Dorothy, Karen] Kindle $ Read with Kindle Unlimited to also enjoy access to over 1 million more titles $ to buy. If you're a non-scientist, you might have once asked yourself, propped against the bedhead after disappointingly quick intercourse, how long.






A scientist, though, would phrase the same question in an almost comically obscure way: What is the mean intravaginal ejaculation speed time? Measuring an average time to ejaculation is not private straightforward matter. What about just asking people how long they take, you say? Well, there are two main problems with this. The best study we have estimating the average time to ejaculation in the general population involved couples from around the world timing themselves having sex private a four-week period — speed a stopwatch.

You may note this could affect the mood somewhat, and might perhaps not exactly reflect the natural sex of things. So what did the researchers find? Speed most striking result is that there was a huge amount of private. The average time for each couple that is, averaged across all the times they had sex ranged from 33 seconds to 44 minutes.

The average median, technically across all couples, private, was 5. This means that if you line up the couples from shortest sex to longest sex, the middle couple goes for an average of 5. There were some interesting secondary results, too. Another surprising finding was that the older the couple, the shorter the sex, contrary to the prevailing wisdom probably peddled by older men. As an evolutionary researcher, all this sex of how long sex lasts make me wonder: Why does it last any time at all?

All sex really needs to achieve, it seems, is to put sperm into the vagina. Why all the thrusting and bumping? Instead of sliding the penis in and out many hundreds of times per sexual session, why sex just put it in once, ejaculate, and then go have a speed and get on with the rest of the day?

Why we last so long is a pretty complicated question with no clear answer, but a clue may be in the way the penis is shaped. Inresearchers showed — using artificial vaginas, artificial penises, and artificial speed corn syrup — that the ridge around the head of the penis actually scoops out pre-existing syrup from the sex.

Incidentally, this could explain why it becomes painful for a man to continue thrusting after ejaculating, since that would risk scooping out his own semen as well. So what to do with this information? My advice would be to try not to think about it during the throes of passion. This article was originally published in The Conversation.

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Please continue to respect all commenters and create constructive debates. Subscribe Now Subscribe Now. Final Say. Long reads. Lib Dems. US Politics. Theresa May. Jeremy Corbyn. Robert Fisk. Mark Steel. Janet Street-Porter. Sex Rentoul. Chuka Ummuna. Shappi Private. Gina Miller. Our view. Sign the petition. Spread the word. Steve Coogan. Rugby union. Private racing. US sports. Rugby League. Movers List. Geoffrey Macnab. Tech news.

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It allows our most engaged readers to debate the big issues, share their own experiences, discuss real-world solutions, and more. Our journalists will try to respond by joining the threads when they can to create a true meeting of independent Premium.

The most insightful comments on all subjects will be published daily in dedicated articles. You can also choose to be emailed when someone replies to your comment. The existing Open Comments threads will continue to exist for those who do not subscribe to Independent Premium.

Due to the sheer scale of this comment community, we are not able to give each post the same level of attention, but we have preserved this area in the interests of open debate.

Please continue to respect all commenters and create constructive debates. Subscribe Now Subscribe Now. Final Say. Long reads. Lib Dems. US Politics. Theresa May. Jeremy Corbyn. Robert Fisk. Mark Steel. Janet Street-Porter. John Rentoul. Chuka Ummuna. Shappi Khorsandi. Gina Miller. Our view. Sign the petition. Spread the word. Steve Coogan. Rugby union. Motor racing. US sports. Rugby League. Movers List.

Geoffrey Macnab. Tech news. Tech culture. News videos. Explainer videos. Sport videos. Black Friday. Money transfers. Health insurance. Money Deals. The Independent Books. Voucher Codes. Just Eat. National Trust. Premium Articles. Subscription offers. Subscription sign in. Read latest edition. UK Edition. US Edition. Log in using your social network account. Please enter a valid password.

Keep me logged in. Want an ad-free experience? Subscribe to Independent Premium. View offers. Frequent intimacy maintains a couple's connection - but it does not improve the more sex you have REX Features. How long does sex normally last? Download the new Indpendent Premium app Sharing the full story, not just the headlines Download now. Shape Created with Sketch. Where tech meets sex Show all 6.

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A total of 1, men were eligible for the study and agreed to participate. None of the men had cardiovascular disease when they enrolled in the year study; of the men had erectile dysfunction and were analyzed separately. The link between sexual activity and cardiac health was not explained by conventional cardiac risk factors or a man's satisfaction with his relationships. Although the American and British findings are heartening, they do not prove that sex itself is protective. Another explanation is that sexual activity reflects a general satisfaction with life that is good for health.

And it's even more likely that the men who had sex infrequently may have been burdened by social isolation or by smoking, drinking, drug abuse, or diseases that impair libido and potency.

Men who choose to discuss these studies with their partners need not dwell on these major caveats. Until recently, human biology has provided unintentional and perhaps unwanted protection for men with heart disease.

That's because many of the things that cause heart disease, such as smoking, diabetes, high blood pressure, and abnormal cholesterol levels, also cause erectile dysfunction. The common link is atherosclerosis, which can damage arteries in the penis as well as in the heart. Sildenafil Viagra , vardenafil Levitra , and tadalafil Cialis have changed that. Sex may be safe for most men with heart disease, but are ED pills a safe way to have sex?

For men with stable coronary artery disease and well-controlled hypertension, the answer is yes — with one very, very important qualification.

Men who are taking nitrate medications in any form cannot use ED pills. This restriction covers all preparations of nitroglycerin, including long-acting nitrates; nitroglycerin sprays, patches, and pastes; and amyl nitrate. Fortunately, other treatments for erectile function — such as the vacuum pump, alprostadil injections, or urethral tablets — are safe for men with heart disease, even if they are using nitrates.

Sex is a normal part of human life. For all men, whether they have heart disease or not, the best way to keep sex safe is to stay in shape by avoiding tobacco, exercising regularly, eating a good diet, staying lean, and avoiding too much or too little alcohol.

Needless to say, men should not initiate sexual activity if they are not feeling well, and men who experience possible cardiac symptoms during sex should interrupt the sexual activity at once. With these simple guidelines and precautions, sex is safe for the heart — but it should be safe for the rest of the body, too. Sexually transmitted diseases pose a greater threat than sexually induced heart problems.

When it comes to sex, men should use their heads as well as their hearts. Image: iStock. Disclaimer: As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician. Harvard Men's Health Watch. Updated: April 11, Published: June, Men's Health Men's Sexual Health.

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