The "toughness" feat, as printed in the core rules, makes the Universe cry. It makes the Universe cry even more than the feats that grant +2 to 2 different skills. What a waste. While the +2 feats have been left alone (take 'em if you want 'em) the toughness feat has been changed to make it slightly more attractive. Instead of granting 3 hit points, once, to characters with the feat, the Toughness feat grants the character 3 hit points per level from the time the character takes the feat. It is not retroactive. Thus, a 1st level wizard with a 9 CON with the toughness feat would have 6 hit points. He will recieve 3 extra hit points for every subsequent level. If a 9th level wizard chooses the toughness feat, they recieve extra hit points for level 9 and every subsequent level, but NONE of the previous levels. Feats are precious commodities, and you should get something good for taking them.