I haven’t heard anyone seriously bring up Lamarkian theory of inheritance of acquired characteristics in a while.
(were you serious? I am not always quick to pick up a joke).
Your children would acquire genes based on those of their mother and their father. Some of those genes would express as dominant and recessive, some with some interaction… and of course there would be some mutations (some good, some not good, and most not of any interest at all). Your life choices and experiences can affect the ways those genes would express. Epigenetics is still not an old science, and we continue to learn how it all works. Of course, your life choices and experiences can affect a lot, even without genetics. For example, if you have more of the kind of muscle fiber that responds to anaerobic training, and someone else has more of the fiber that responds to aerobic training each of you has a greater capacity to excel in those areas (though you each also start with undifferentiated muscle tissue that you can train to one area). So nature and nurture are always intertwined.
btw…. evolution is rather slow…. and requires a population rather than an individual.
According to the Theory of Evolution:
‘Evolution is the change in the inherited characteristics of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organisation, including species, individual organisms and molecules such as DNA and proteins.’
So, according to the Theory, it will take many generations of successive breeding is order for your offspring to reach a level of your satisfaction. Not to mention that your kids might chose not to become fitness enthusiasts and workout junkies after all.
in the event that this is a serious question: those babies are at grave risk of never being born because over-training can interfere with male reproduction and sperm count. See the article by the National Institutes of Health http://www.ncbi.nlm.nih.gov/pubmed/8405526.
But, if you select your partner carefully based on strength and determination, and if you instruct your offspring for the next several thousands of years to do the same, you may be able to affect an evolutionary adaptation through selective breeding.