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7 Studies Explain What the Size of Man Hands Really Means

Everything scientists know about hand size, finger length, and your penis size.

Small hands or big hands, a man’s hands say a lot about him. Strong, calloused hands may suggest a guy works with his hands, spends lots of time outside, or lifts weights. We may associate bruised knuckles with fighters and long, dextrous fingers with concert pianists and surgeons. And while that’s all pure conjecture, the size of a man’s hands can, in fact, reveal a lot about his biology. Men with small hands and men with big hands have one thing in common — their mitts give away a ton of information about everything from their athletic ability and cancer risk to their sex life and, yes, penis size

When scientists study a man’s hands, it’s not so much whether they’re big or small overall — they’re looking at the relative size of his fingers. The length of a man’s index finger, compared with his ring finger, tells scientists how much testosterone he may have been exposed to in utero, which influences many behavioral, health, and anatomical outcomes throughout his life. Whether you’re a guy with small, large, or average-size man hands, these two fingers say a lot more about you than you may realize. 

Longer Ring Fingers Mean More Sex and More Fertility

The same study suggests that longer ring fingers may be linked to fertility, a contention backed by preliminary research. Other studies indicate that men with longer ring fingers are four times more likely to partner with women who display outward signs of fertility, such as larger breasts and hips as well as smaller waists. Meanwhile, both men and women who have longer ring fingers may be predisposed to having multiple sex partners, Oxford University research suggests.

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A Man’s Fingers Hint at Superior Athleticism

Men with longer ring fingers have better hand strength, regardless of their age and body size, a team of father-son researchers found. Several studies echo the sentiment that longer ring fingers are linked with superior athleticism and overall strength. Shorter ring fingers are best for watching sports. And that’s probably why foam hands at sports stadiums highlight the pointer finger instead.

A Man’s Hands and Fingers Might Have to Do With His Level of Attractiveness

Men with long ring fingers may be more prone to promiscuity because they’re too damn attractive, other studies show. It’s no excuse, but when researchers had 49 women assess the attractiveness of 49 men, they found that men with longer ring fingers ranked higher than their peers.

A Man’s Finger Length Predicts How He’ll Treat Women

Men with longer ring fingers are more likely to smile, laugh, compromise, compliment, and listen attentively to women, according to one study. And the longer their ring fingers were, the kinder and more attentive they seemed to become. Men with longer index fingers, however, argued a lot with the women in their lives.

A Man’s Fingers Also Have Something to Do With His Cancer Risk

There’s also evidence that men with long index digits have a comparatively lower prostate cancer risk. But don’t believe anyone who says that the size of your hand in relation to the size of your face has anything to do with cancer. That’s a prankster who wants you to hit yourself.

Yes, a Man’s Fingers Say Something About His Penis

The length of men’s fingers can predict how they treat women, approach sex, and perform at sports, but is the old wives’ tale about the man downstairs true, according to science? You’re damn right it is. One study, published in the Asian Journal of Andrology, revealed that men with longer ring fingers had longer penises to match (no word on girth). After considering the age, weight, height, digit ratio, individual finger length, and body mass index (BMI) of 144 men, they found that height and the gap between index and ring fingers were the other factors that made a difference.

“Based on this evidence we suggest that the digit ratio can predict adult penile size,” study authors write. So if you’re not sure exactly what you’re working with, it’s really in your hands.