u/AbbreviationsBig6066

What are some of the biggest problems u guys are facing like common problems that u think could be fixed by an app but doesn't exist for now

So basically my gf is worried about her thighs and waist being fat. She wants to reduce then and have a korean physique with thin thighs and small waist. She is 4'11 or 5 and 50kg. I don't care about these but she cares about it alot so is there any exercises or yoga that can help. She still likes to eat fast food and oily stuff once a week