I was the same size, when I was 135ish everyone just thought I was little, or skinny. Hit the gym for two years and put on a massive amount of muscle. I hate being short, tall people can just be skinny and everyone applauds their visible abs. If I just wanna eat healthy and do cardio to have visible abs I'm "just a wittle guy". That being said, once you really start putting on muscle it goes a long way, 10lbs on 5'6 is wow, 10lbs on 6' is "do you even lift?".