I am only 96lbs 5ft1. I tried bulking up to 105lbs but I honestly got too big and felt too musclebound I was turtle slow and lost my zips people were commenting on it actually don’t lift weights fellas. Anyways I’d post this to training but it’s a wasteland. Thanks dudes.
Amateur boxing matches do have a minimum weight (in the US). Although, unless you are a kid, there is no 105 pound weight class in amateur boxing. Or at least there's no major competitions for 105 pound boxers . (Nothing is prohibiting you from fighting another person at an agreed upon catchweight at 105, 102, etc.) In professional boxing, weight classes have no minimum limit. Roy Jones Junior, for example, fought for and won a heavyweight title against John Ruiz while only weighing 183 pounds.