Cyclists don't have boys?

I heard a theory from a physio the other day that cyclist dads don't have sons. I thought it was a throwaway comment at first, then she encouraged me to think about the male cyclists I know with kids. She reckons it's really hard for cyclists to produce girls.

I know a LOT of cyclists who have all girl families. The one who does have boys wasn't cycling at the time of conception.

So the physio reckons my DH would have to give up cycling if we ever wanted to have a boy (no we're not thinking that way yet!) I said it would be a long cold day in hell before that happens!

Maybe there's something in that for you gender swayers...

I want a girl !

Better go tell DH to get on his bike !

Hmmmm DH has just started riding and is now addicted and rides to work everyday. It may indeed help ttc a girl.

Dh rides. We have a boy. Obviously he's not a professional but, he rides 3-4 times a week. Maybe we got lucky?!

I've heard the same said of pilots, too.

BW

I know two cyclists, one of them only has boys and the other has one boy and one girl!

Apparently athletes tend to have girls. Maybe it's the same thing.

BW it's not just pilots - aircrew, airfield technician type people, apparenlty it has something to do with the radar equipment used.

My Pop was semi professional cyclist and he had 4 boys

My cousin also is a keen cyclist and they also have boys

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BW it's not just pilots - aircrew, airfield technician type people, apparenlty it has something to do with the radar equipment used.

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It also said about the boy in the Navy has everything to do with the radar, XH little swimmer arent in the best shape due to this, but that said we have 2 off each lol... they also say that if your man has been away along time then your more likely to get a boy and if he is home all the time you get girls, we concived DS1 after xh was away for 4 mths

Just mentioned this to DP and he said he's heard it's hard for cyclists to have kids in general? But I guess as Em says it's not a rule. :)

I have heard though that men who are stressed are more likely to produce sperm with X-chromosomes and so are more likely to have all-girl families. Men who manage their stress better apparently are more likely to have all-boy families.

Apparently this was the result of a medical study; thinking of the men I know who have all girl families and all boy families, the stress-heads definitely had the girls!

I wouldn't have a clue about cyclists, but as for pilots ... my close girlfriend's dad was a domestic and international pilot ... she had three younger brothers all conceived during his flying years : )

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Apparently athletes tend to have girls. Maybe it's the same thing.

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Gosh,no offense to my DH but he's hardly an athlete! No idea how we ended up with a DD then :rofl:

BIL is a keen rider, super fit (kite surfer and windsurfer too) and always doing something sporty. Two sons for BIL and my sister :)

With our first DS, DH was riding 70kms a day 5 days a week and we fell pg with DS so I don't know how true it could be.

They also say truck drivers should only produce girls as well but we have 5 boys :dunno:, lol.

I know a family with one girl and 3 boys and the father rides everywhere.... I think this theory is about the ideal temp the testes should be kept at (hence them being enclosed in the scrotum away from the body). There are loads of things that could also affect this such as the hormones produces by both the mother and the father... you think if the man is being competitive he would have high testosterone, and there for favour Y sperm production....??

Thing is... it may increase the likelihood of having girls, but it doesn't make boys impossible. You'll always find cases where the opposite has happened.

BW

Hmm DP rides a LOT and we have 2 girls - no trouble concieving them either, first try both times!
Thinking of all the other full on cyclists that we know there does seem to be a larger number of daughters in the group..... might get DP to do a poll with his bicycle forum and I will report the results back :lol:

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Hmm DP rides a LOT and we have 2 girls - no trouble concieving them either, first try both times!
Thinking of all the other full on cyclists that we know there does seem to be a larger number of daughters in the group..... might get DP to do a poll with his bicycle forum and I will report the results back :lol:

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OMG I would laugh if our DHs use the same bike forum! Your family did spring to mind as I was running through everyone I knew.

Apparently it has something to do with the heat of the scrotum. Boy sperm are generally more delicate and don't deal as well with the heat. I can't find any research on it though

My best friend would debunk this theory, albeit she would love to have a girl, but she is about to birth her second son even after trying gender swaying conception techniques. Her DH cycles at least 60km a day to/from work plus mountain biking every week. She cycles up to birth too :) Maybe they are just the other end of the odds as BW points out.

They say the same about scuba divers. In DH's circle of diving instructors there are slightly more girls than boys, but still plenty of boys including our two!

Yup they say the same about Bakers as they are near the heat...um I have 2 boys? :) so who knows lol

DH is stressed and we have 2 boys, and my BiL cycles heaps and has 3 girls

The poll on the Bicycle Victoria forum (courtesy of DP) has shown 14 boys:11 girls

Myth debunked by Victorian cyclists at least

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The poll on the Bicycle Victoria forum (courtesy of DP) has shown 14 boys:11 girls

Myth debunked by Victorian cyclists at least

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Sweet. We really struggle with girls names.

They also say if you hang a ring on a thread and dangle it above a pregnant womans belly you can predict the sex.... :rofl:

Sorry but I don't put much stock in any of this - it is all antedocal, with no real evidence or significant statistics to back any of it up. There is a 50:50 chance of either gender. It is just a random quirk that means some people end up with more of one then the other, and unless the family in question is of significant size then you cann't really say they are more prone to one gender then another (a sample of one or two kids in not a sample).


FWIW - my family has a funny family pattern. I am one of six kids: five girls, one boy (although it would have been two boys, but mum had a still born). One of my aunties has 3 girls, one boy. Another Aunty has 4 boys, one girl. One of my uncles has 3 boys, 1 girl. This is a commone pattern in my family amongst those with large families. I am curious myself to see what my next will be and if I will follow this pattern or not.

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They also say if you hang a ring on a thread and dangle it above a pregnant womans belly you can predict the sex.... :rofl:

Sorry but I don't put much stock in any of this - it is all antedocal, with no real evidence or significant statistics to back any of it up. There is a 50:50 chance of either gender. It is just a random quirk that means some people end up with more of one then the other, and unless the family in question is of significant size then you cann't really say they are more prone to one gender then another (a sample of one or two kids in not a sample).


FWIW - my family has a funny family pattern. I am one of six kids: five girls, one boy (although it would have been two boys, but mum had a still born). One of my aunties has 3 girls, one boy. Another Aunty has 4 boys, one girl. One of my uncles has 3 boys, 1 girl. This is a commone pattern in my family amongst those with large families. I am curious myself to see what my next will be and if I will follow this pattern or not.

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Sorry to disagree, but there is plenty of evidence to support this stuff and there is logic behind it.... Dominant women have more boys, men who work in high temps have a tendency to throw out more X sperm, more girls are conceived in the warmer months, more boys are conceived on a full moon etc etc... there are many studies to support these things. Look up some studies by Valerie Grant :)

Yeah - the Y sperm die quicker from heat exposure - so tight sweaty lycra shorts would encourage that. My neighbour is a cyclist and has 1 of each, however they claim their son was conceived in winter!! Too much heat will damage both Y and X sperm eventually.

DH's cousin has been a pilot for many years and has produced 3 girls - Y sperm don't appear to like the radiation either!! Interestingly, studies have also found that flight attendants have high miscarriage rates compared with the general population.
I would love a girl next but I certainly won't be exposing myself to radiation unecessarily prior to conception!

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They also say if you hang a ring on a thread and dangle it above a pregnant womans belly you can predict the sex.... :rofl:

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I did it for all 7 of my kids...and it was spot on! Coindidence maybe but that is a good coincidence :D

Boy sperm are much more fragile than the girl sperm, the heat kills them off quite quickly.
That is why if you are trying for a boy DTD right on ovulation as the boy sperm swim faster but die quicker.
So I agree with Jellybean tight lycra and long hot sweaty rides would do that.

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They also say truck drivers should only produce girls as well but we have 5 boys :dunno:, lol.

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My dad is a truckdriver and had 5 girls! Haha! But he is a stress head so maybe the stress theory is true!?

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I want a girl !

Better go tell DH to get on his bike !

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You and me both ;)

Funnily enough, my uncle was rider, in comps ect.. and had 6 girls.. moved towns, stopped riding, and ta da, a boy!!!!!