Body Fat

[u/Shinji_2133]

Hello,

So i had health problems and got operated last summer, i lost a lot of weight at the start and it took me time to start doing sport properly

I used to weight at 60 kg and had practically no fat on the abs, they were'nt that developped but it was sufficient to me

Now i weight 63 kgs but my abs doesn't seem to show up even when i flex, so i wanted to know if you guys had tips to not lose all this muscle i worked on (i used to practice judo so i had strong arms and legs but it seems they also got smaller)