I met a young couple from New Zealand in the Hong Kong airport years ago. We were waiting for our next flight and got to talking. I asked them about their experience in my home country, the USA.
They had worked in the US for a few years and shared a simple observation about Americans and rest. Generally, they realized we don't seem to know how to take time to rest, even when we're sick.
Think about it. Immense amounts of sick leave and vacation time go unused each year by Americans. When we do take vacations, they're often expensive and so activity-filled, we need a rest after our vacation! This carries over to our faith.