I'd say buy some high quality protein, workout, and put on some damn weight.
I'm a twig and you're skinnier than me....
Seriously though, get the 151 and work on gaining weight, I'm not joking.
"When I do good, I feel good; when I do bad, I feel bad. Thatís my religion." - Abraham Lincoln
Moral of the story: If your going to rob people, wear a diaper.