I’m 17 5'10 weigh 140 and I run 3 miles everyday. And I have been eating healthy for a while. But the running part I have been doing for 2 weeks and I have been weightlifting 3 times a week( circuit once out of three). I dont see any abs. Im cut in all other places, but not my stomach. There is like an inch or a half inch there. I also play sports a lot too. My BMI is like 19.4. Does that have to go down? I also do ab excersies, but i dont know how much i should be doing. What should I do about this, to get abs and will growing taller help me?