lemonade - if you're really stuck try 'lengthening your tool' by slipping a tube (old seatpost maybe) or ring spanner if really pushed to get a bit more leverage. Don't resort to bashing it with a hamme though as something is bound to go wrong. Or hold the bike so the pedal is over the gas cooker hob (if you've got gas that is, I'm not sure the microwave will help) and get some heat into the pedal / crank area.
lemonade - if you're really stuck try 'lengthening your tool' by slipping a tube (old seatpost maybe) or ring spanner if really pushed to get a bit more leverage. Don't resort to bashing it with a hamme though as something is bound to go wrong. Or hold the bike so the pedal is over the gas cooker hob (if you've got gas that is, I'm not sure the microwave will help) and get some heat into the pedal / crank area.