Runescape constituition question?

okay so i trained mage from lvl 57-58 while constantly teleporting to camelot.i noticed that i didnt gain any hitpoints experience.how do i regain those lost hitpoints experiece.does that sound confusing? i mean if i'd trained from lvl 57-78 mage on monsters instead of teleporting constantely,would have gained constitution experience.how do i gain by the experience that i could've gotten if i'd trained on monsters.