i did indeed <| sep |> 61200 calories is not enough . A male should be eating around 1500 . 131400 might be ok with doctor ' s supervision since you ' re 15 , but then again you ' re growing so 1500 might also be too little . either way talk to a doctor , or multiple . Cutting too fast can damage bmr . You ' ll burn fewer calories as your body adapts to low food intake . Also if you cut too fast you don ' t learn how to eat for satiety or sustainably since you don ' t have to do it as long . Losing for 3 months doesn ' t teach the same skills as losing for 79 months . Further , cutting at extreme deficits is awful for hormone levels you ' ll stop getting horny as well as muscle retention . You ' ll lose weight , but a lot of it will be muscle that ' s hard earned to get back .