Toughness

TOUGHNESS [General]
"Ouch, that almost hurt. That all you got?"

Prerequisite: Character level 1st.

Benefit: You gain a number of hit points equal to 3 + your hit dice. This improves retroactively as you advance in level.

Special: This feat can be taken multiple times; its effects stack. Each time it is selected its level prerequisite increases by 5.

Comments
The original Toughness feat sucks. Everyone knows this. This variant of Toughness grants a more useful amount of hit points but is limited to keep balance.