There's a time for everything.
A time to work, a time to sleep.
There's a place for everything.
A place to work, a place to sleep.
They say, "variety is the spice of life".
Yes, a variety done one thing at a time.
Multi-tasking is common now a days, but its productivity is questionable.
Because of too many things to do at the same time, we sometimes end up exhausted with less production.