Constitution

Constitution is another word for Health points. You get experience in this skill by getting hit by enemy's (both PVE and PVP).

Per 5 levels you gain half a heart added to your heart bar and at level 99 you get one extra for reaching max level.

Hearts per Level
This is a list of how many hearts you should have at what levels:
 * Level 1 - 10 Hearts
 * Level 5 - 10,5 Hearts
 * Level 10 - 11 Hearts
 * Level 15 - 11,5 Hearts
 * Level 20 - 12 Hearts
 * Level 25 - 12,5 Hearts
 * Level 30 - 13 Hearts
 * Level 35 - 13,5 Hearts
 * Level 40 - 14 Hearts
 * Level 45 - 14,5 Hearts
 * Level 50 - 15 Hearts
 * Level 55 - 15,5 Hearts
 * Level 60 - 16 Hearts
 * Level 65 - 16,5 Hearts
 * Level 70 - 17 Hearts
 * Level 75 - 17,5 Hearts
 * Level 80 - 18 Hearts
 * Level 85 - 18,5 Hearts
 * Level 90 - 19 Hearts
 * Level 95 - 19,5 Hearts
 * Level 99 - 20 Hearts