"Have a break, have a Kit-Kat"
Rather, I'd say:
"Have a break, have some unpaid leave"
The Swiss call it "UBO".
Colleagues in their late 30s, early 40s have done 3 months unpaid leave learning Japanese in Japan, skiing in Siberia or walking across the Alps.
They've all come back mentally and physically refreshed.
It's harder to organise if you're married with kids, but it can be done.