Sleep

For the spell, see Sleep (spell).

There are rules for sleeping on WSG 65 but they are too simulationist.1) Instead, apply the following effects of bad sleep:Ex

State Required sleep modifier Effects
Less than required sleep (base 8 hours) -1 to-hit, -1 to saves, +1 to AC
Sleeping in any armor -1 to-hit, -1 to saves, +1 to AC for every night past the first
Sleeping in metal armor (other than elfin chain) +4 hours -40% MP from required sleep modifier (round to nearest)
Sleeping in a tree (or similar) +4 hours -40% MP from required sleep modifier (round to nearest)

Effects are additive, and a single night of proper sleep reduces the standing penalty by 3. For example, sleeping in plate mail 2 nights in a row and only getting 8 hours of sleep each night would be a (-1 for sleeping in any armor 2 nights in row and a -2 for 2 nights of getting less than 12 hours of sleep, for a total of -3. A single night of proper sleep would totally erase this penalty (-3 + 3 = 0).

1)
See learning_adnd for information on how Demon Idol uses the WSG and DSG.