I always did wonder about the really skinny teens wearing the tanks. I wear a hooded sweater for practically every workout, or a football jersey. I don't know if this sounds right to you guys, but I don't want to discourage myself during my workout looking for a pump and want to just train by feel. Anyhow, staying covered up means I don't wonder if this guy or that guy has thicker delts, or that guys has a wider back etc...