Can you spend fatigue during gard to gain movment points?

When you take a move action during a game week how far can you move?

Does time pass when the heros are in a dungeon?

The one and only said:

No. Guard only allows an attack action. Fatigue may be used during the attack to upgrade or add power dice as normal.

The one and only said:

One trail. End points of the trails are cities, dungeons and special locations. If the party has the Staff of the Wild they can travel up to two trails per week.

The one and only said:

No.

I cant find it in the rules that fatigue cant be used during gard to gain movment/move a hero, can you point out a rule for me?

My Heros cant stop arguing about this.

If they don't like it, they can play the character who can move three spaces after revealing a guard order before she attacks. (from one of the expansions)

As for the rule, it's on page 18 under spending fatigue:

Spending Fatigue for Movement
At any time during a hero’s turn , he may spend one
fatigue to gain one movement point, even if he is currently
taking the battle action. This may be done as often
as the hero desires. Movement points gained in this
manner are spent just like normal movement points.

and on page 14/15 under orders:

Guard
A hero that has placed a guard order may make an
interrupt attack.
At any point during the overlord player’s turn ( not during
a hero’s turn ), a hero may use his guard order to
immediately “interrupt” the overlord player’s turn and
make one attack (following all the normal rules for line
of sight and attacking).

That should clear up any doubts :-)

Top of page 18, Spending Fatigue for Movement":

"At any time during a hero's turn , he may spend one fatigue to gain one movement point"

There is nothing that says a hero can spend a fatigue for movement during the OL's turn.

Edit: D'Oh! Beat to the punchline.