Many of them have been chained to their beds.
One man does push-ups in the corner, his feet tied by iron ropes to the side of his bed.
Another plays with the links on the chain, talking to himself, oblivious to the people around him.
Tucked away in a suburb of Jakarta, Galuh is a home for Indonesia's mentally ill.
It's not easy to find - hidden down a dirt road, behind a bunch of shacks and a horse shed.
When you enter, it's like walking back into the dark ages, leaving modern Indonesia behind.
The people who work at Galuh say at any given time about 10% of the 280 residents here are shackled - but they say it's for their own good.
I spot Ii in the corner. The young man sits quietly, with an almost yogic expression of calm on his face.
Wearing only a pair of shorts, he says nothing, does nothing, just sits. He has been shackled in Galuh for two weeks.