Bleak parts, salubrious hours

To help our bleaker parts
Salubrious hours are given,
Which if they do not fit for earth
Drill silently for heaven.

~Emily Dickinson

Puzzling over this one. I had to look up “salubrious”–it means “healthy” or “health-giving.” What kind of experiences are healthy for “our bleaker parts” and prepare us for heaven rather than earth? This feels like possibly some Puritanical justification of suffering, but I’m not completely sure. This may be because it’s the second day of the school year. The first day was great, but afterwards it hit me just how much I’ve taken on. My bleaker parts could definitely use some help, and I’m not sure my brain is firing on all cylinders. So I’ll leave this poem for now, and go seek out some salubriousness of my own.