
RAWmonger |
To answer OP, yes. You can keep using keep watch every night with no negative effects. Why you would want/need to though I don't know, since "vigorous activity" is actually a pretty broad spectrum. It's not just physically vigorous activity, but all vigorous activity. The only clarification it gives is "including fighting," but for a magic user, "fighting" can include simply casting spells.
The inference drawn from this is that casting spells is considered vigorous activity, so you can't cast any spells during the duration without breaching keep watch. Most GM's also rule that you can't craft during this time either, since it takes both physical and mental strain and serious attention.
Personally I think the thing it is best used for is to keep your darkvision/high perception party member up as your lookout all night. It's also helpful if you're pressed for time in a situation and need to decipher unknown texts, read through texts, take the time to read and understand a wisdom text or riddle/question, if you wanted to transcribe new spells into your spellbook from a different source, etc...
However, any and all of theses things (except being a lookout), can be ruled as "vigorous activity" by your GM. An exceptionally hard linguistics check might be too much of a mental strain for your character and breach the spell, and so on. This is one of those areas that's really left up to GM discretion for the purpose of game balance.
EDIT: It's also incredibly useful if you have a character being effected by nightmares or other sleep-related curses/problems.
Note: This spell does not *prevent* a creature from sleeping (magically keeping them awake). They can still choose to sleep at will, they just don't need to.

Lady Asharah |
I'd rule that anything that requires a roll constitutes a "vigorous activity" whether physical or mental. You can still take 10 on things as that implies a routine activity, and routine is never strenuous.
Picking up 50lb weights can be fun for an 20STR barbarian to pass time, but a strenuous activity requiring an athletics check for a 10STR rogue. It's all subjective.
A wizard can read a difficult treatise on magic for fun. A fighter will tear their hair out trying the same.
But at the end of the day Keep Watch can be cast every day and forgo the need to sleep (which is mechanically only useful for high perception people on actual watch... and the spell breaks as soon as they actually hear/spot something that calls for perception check). Storywise, picture yourself staying awake for 8 hours, deep in the woods, unable to do anything that requires more than minimal concentration. Now think how bored you would be. Sleep is good.

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Melkiador wrote:The weird thing is that this same source has the bed of iron spell, which is completely invalidated by the keep watch spell.I guess that it's for the guy who really wants to sleep.
The human mind is not made to work constantly without pausing every so often to reboot and rest. While there are several spells that allow people to bypass the need for sleep, I feel that doing that for a long period should require a change in the basic nature of the creature doing it.
Becoming a half elemental or a half outsider together with spell use will work. Probably there are other ways, but if you don't sleep at least a couple of hours every day, after a time you are no more human.
There have been studies of the effects of sleep deprivation on soldiers, and the results show that we aren't made do live without sleeping.

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Jeff Morse wrote:And give up dreaming, desna forbidplus the food is fantastic.
LOVE that spell

bbangerter |

Talonhawke wrote:Melkiador wrote:The weird thing is that this same source has the bed of iron spell, which is completely invalidated by the keep watch spell.I guess that it's for the guy who really wants to sleep.The human mind is not made to work constantly without pausing every so often to reboot and rest. While there are several spells that allow people to bypass the need for sleep, I feel that doing that for a long period should require a change in the basic nature of the creature doing it.
Becoming a half elemental or a half outsider together with spell use will work. Probably there are other ways, but if you don't sleep at least a couple of hours every day, after a time you are no more human.
There have been studies of the effects of sleep deprivation on soldiers, and the results show that we aren't made do live without sleeping.
What did the studies conclude with regard to the amount of sleep needed when magic was involved to reduce/eliminate the need for sleep?

LordKailas |

What did the studies conclude with regard to the amount of sleep needed when magic was involved to reduce/eliminate the need for sleep?
I mean, it probably depends on which study you're looking at. But I believe that practitioners of magic have found that not only does using magic augment your sleep not have any negative side effects. There are benefits to prolonged use. Your skin becomes more sensitive to ambient magical vibrations (a sort of buzzing sensation). It becomes easier to ignore your surroundings and enter a meditative state. Best of all it becomes much easier to see the unseen. While the first two benefits are often gained pretty quickly, the third benefit takes a bit longer to kick in.

blahpers |
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Pathfinder: Here are rules governing the need to eat, drink, and sleep, and all the horrible things that happen if you fall behind on those.
Also Pathfinder: Here are a couple of level 0/1 spells that relegate those rules to the waste bin.
Frankly, it's a wonder anybody on Golarion ever eats, drinks, or sleeps.

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2 people marked this as a favorite. |

Pathfinder: Here are rules governing the need to eat, drink, and sleep, and all the horrible things that happen if you fall behind on those.
Also Pathfinder: Here are a couple of level 0/1 spells that relegate those rules to the waste bin.
Frankly, it's a wonder anybody on Golarion ever eats, drinks, or sleeps.
Don’t forget endure elements....
Never mind, no need to sweat it...