The "
hard gainer" of the fitness world since they have a hard time building muscle although it is not impossible.
They're naturally small built with
long, lightly muscular limbs. The have a fast metabolism so the can
stuff their faces without putting on weight.
To gain muscle they need to eat alot and do heavy weight training, its advised that they avoid cardiovascular activities since cardiovascular activities burn fat
Examples of ectomorphs are Lisa Kudrow, Kate
Moss, Brad
Pitt, Seth
Green, Edward Norton and most NBA players