My mars is in cancer in 3rd house. However, it forms a trine to pluto, but I don't think that people with mars-pluto aspects generlly look athletic.
My chart ruler Mercury is in the 6th house in Sagittarius and trines mars, but again, not all people with mars aspects to their chart ruler look atheltic in my opionion.
With athleic I mean borad shoulders and smaller hips and shorter neck. For my gemeni ascendant I think a have a sporty built and look like I could be into sports
But as mentioned by others it is also genetics and my dad was in competetive sports when he was younger and he looks athletic, too.
My chart ruler Mercury is in the 6th house in Sagittarius and trines mars, but again, not all people with mars aspects to their chart ruler look atheltic in my opionion.
With athleic I mean borad shoulders and smaller hips and shorter neck. For my gemeni ascendant I think a have a sporty built and look like I could be into sports
But as mentioned by others it is also genetics and my dad was in competetive sports when he was younger and he looks athletic, too.