This is the 15326th most frequent Polish word.
skupiać
"Skupiać" means "to focus" or "to concentrate."
In this sentence, 'skupia się' means 'focuses'. It's about concentrating attention on an activity or subject.
On skupia się na nauce nowych umiejętności.
He focuses on learning new skills.
Here, 'skupiam się' is used as 'I concentrate'. The word indicates personal effort in maintaining focus on health.
Skupiam się na swoim zdrowiu każdy dzień.
I concentrate on my health every day.
In this case, 'skupić się' (to focus) is used in its infinitive form to express necessity in directing attention towards problem-solving.