Todays reading (Mk 1, 29-39) is action packed.

In this passage we see Jesus moving around 
the synagogue, home, villages and lonely place for prayer.
His actions are preaching, healing, chasing the demons out,
praying and moving around.
It looks that many days activities are telescoped by the author.
It is a summary statement about Jesus public ministry.
Jesus movements are oscillating between Synagogue to synagogue (vv. 29,39)
Todays activities begin in synagogue and end in synagogue (inclusive)
And the activities are preaching, healing and praying.
Except for praying, for the rest he is always with the people.
The four disciples Peter, Andrew, James and John are 
just observers. They do not seem to be doing anything.
Even they are not with him for prayer.
So prayer seems to be a personal activity.
(When you pray go to your inner room and having shut the door
pray to your father in heaven …)
– A model missionary life presented to the disciples
to learn and follow – consequently for us also