on a bed with a soft mattress
on a bed with a firm mattress
on a sofabed
on a foldable camping bed
on a hammock
in an armchair
on a mattress on the floor
on the floor
in a tent
outdoor in a sleeping bag
on the street
sitting on a vehicle
over work/studies
in a meeting/conference
walking
via 4-arg select
I never sleep
I always sleep