Losing weight via a sauna is losing weight through dehydration and is a quick way to get yourself hospitalized. 5'9" at 138lbs? Dude, you've still got a lot of growing to do.
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto