According to the description, the barbarian past life should grant 1 hp per character level, for a total of 20 hp upon capping.
So, If I switch a toughness feat out for the barb past life feat, I should lose a net of 2 hp (toughness feat grants 3 at first level as opposed to 1), but I lost 15 when I did it.
Anyone else experienced a similar situation?