to stop thinking about something for a while and relax
перестать думать о чём-то на время и расслабиться (perestat' dumat' o chom-to na vremya i rasslabit'sya)
"After a stressful week, I like to take a walk to clear my head."
"После напряжённой недели мне нравится прогуляться, чтобы очистить голову." (Posle napryazhonnoj nedeli mne nravitsya progulyat'sya, chtoby ochistit' golovu.)
too good or powerful to compete with
anxiety about things that are unfamiliar or uncertain
extremely intense and ruthless competition
in written form; clearly stated
to feel relaxed and confident
to criticize someone angrily