to clarify this- you get 3 exploration points when you level (the 3 red dots on the sign). After using one, it takes 120 minutes for a new one to regen, 6 hours for all 3. But they all pop back when you level. So at really low levels (under 10), just do 3 explores in a row as soon as you level, so you don't forget them. Later, do your 3 explores after you've used some stamina, to level faster. and of course, make sure you've used all your explores before logging off at night, since all 3 will come back if your gone for 6 hours or more.