He was working on the computer for a long time.

If stress accumulates, it becomes easier to get sick.

There is a pile of laundry in the corner of the room.

I've accumulated fatigue from long hours of studying.

I study at the library every day.

I try to study at least one hour every day.

I set aside time for studying every day.

After working all day, I felt run down.

I worked all day and ended up being exhausted.

After working all day, I was completely exhausted.