The phrase "absorbed in activity" is correct and usable in written English.
It can be used to describe someone who is deeply engaged or focused on a particular task or action.
Example: "She was so absorbed in activity that she didn't notice the time passing."
Alternatives: "engrossed in activity" or "immersed in activity".
In harmonious passion, you are absorbed in an activity because you love how the activity itself makes you feel.
At the same time he became increasingly absorbed in political activity.
They also experience more "flow", the sense of being totally absorbed in an activity at which you are an expert.
In his book Flow, the psychologist Mihaly Csikszentmihalyi describes the state of being so fully and pleasurably absorbed in an activity that time seems to disappear or warp.
She is "so absorbed in her activity", points out the wall text, that she doesn't notice the satyrs getting their own pleasure by watching her.
And when we are fully absorbed in an activity, in a state of flow, it can be adaptive to lose self-awareness.
At this point I have entered what psychologists call "flow": a term used to describe a person's state of mind when they are completely absorbed in an activity.
Mr. Alford, who used to write a monthly manners column for The New York Times, described the issue as a "monomaniacal obliviousness" of being absorbed in an activity to the exclusion of the rest of the world.
This emphasis on active verbs turns out to be an excellent device, recreating how it feels to be fully absorbed in physical activity, the mind, that often unwieldy "organ", streamlined into unity with the body.
And in so doing one is fully absorbed in an activity which feels to one to be of intrinsic worth, and where the feeling of one's self as a distinct agent disappears because of the absorption.
