Belly Fat Or Excess Skin?

s It Belly Fat Or Excess Skin?
I am male of 19 years old, 1.80 height and 73 kilos! when i was 14 i was fat and my weight was 92 kilos so i managed to lose 30 kilos in 1 year without eating... that resulted in being thin and having quite big belly and big hips...
i just started gym in order to...

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