Okay, so I began to do the challenge myself. I rolled up five characters and picked up the one which came out as most interesting to me, I've picked one.
https://i.imgur.com/IgUF4yu.jpg
Meet Jordon Haley. He is a charismatic young man who has a passion for athletism. The go getter is ready to move in and make lots of new friends. He dreams of becoming a pro athlete one day and making it big.
https://i.imgur.com/1VosC11.png
With his starting money I was able to make a nice, comfortable home with all the necesities at the Bargain Bend.
https://i.imgur.com/zp2c4TT.png
My first aspiration was simply to get him to buff and it was achieved very quickly in few game days. I was hoping to get him to get the introvert achievement too but for some reason, I have always trouble triggering this even if I put the Sim into home all alone for days. Do receiving calls even when not picking them up count as social interaction or something? I did absolutely nothing social in multiple days and didn't get that achievement.
https://i.imgur.com/r3kcShb.png
Anyway, here he is just having reached his body building aspiration in his new training room.
Current points: 50