Improving Jing, Chi and Shen will make you stand out from the crowd. People will be more aware of your presence.
This thread discusses it in detail:
https://forum.enlightenedstates.com/t/weird-stares-from-people/2263?u=conkerryan
And higher Jing levels will lead to higher testosterone levels, which can lead to an increase in muscle mass and more attraction from the opposite sex:
https://forum.enlightenedstates.com/t/does-jing-increase-testosterone/1755/5?u=conkerryan
But there are other fields, that directly increase attraction and muscle mass.