yes- as someone who’s been both average and fat and is losing weight- you can definitely tell especially if you have good abs under the fat, the fat is squishy you can press on your stomach and feel the distended ab muscles, visually though it depends on what you weigh fat distribution etc. for some people yes for others no. for me i’m like 230 ish and i can definitely notice when i’m looking in the mirror i look like 15 lbs heavier