just throwing this out there wrote:
Racing weight wrote:
so I am 5'6 and 110 pounds which would make me underweight, but I don't have my lower abs showing and could probably lose about 4-5 pounds.
BMI Is 17.8(under 18.5 is classified as under weight)
So what you don't have lower abs, that's more genetic base.
Here's one of the fastest runners over 10k/XC currently, should he lose weight?
https://www.instagram.com/p/BhsbImglt4C/
BMI is NOT a good measure for what's underweight/overweight. It's based on average people, but athletes in general are way more muscular than average population with lower body fat %, so an athlete with 17 BMI and lots of strength/muscles but low BF% may be considered normal whereas a 18 BMI skinny fat model with not a single muscle on her body (ok I'm exaggerating but you get the point) would be considered anorexic and extremely underweight. Also, BMI doesn't differentiate between men and women, or between a 5% BF guy and a 20% BF guy.
The runner you showed is also not a great example - he weighs 52 kg/114 pounds, and his BMI is 18.6. He can afford to have a bit more muscle, because he is so small he is still very light anyway.