Possible Clues:

• Most bears in the wild remain inactive for months
• I wrestle with bear, then sleep
• Sleep for winter
• Breathe in, out — imperceptibly, if one does this?
• Shot the bear in winter
• Breathe in oddly in winter
• Burn off fat, perhaps
• Breathe in (anag) – to become dormant
• Dislike going round one Alpine city -- go out in the snow?
• The bear in troubled sleep