Stage 5—Fall transition is a period after hyperphagia when metabolic processes change in preparation for hibernation. Bears voluntarily eat less but continue to drink to purge body wastes. They become increasingly lethargic, resting 22 or more hours per day, often near water. Active heart rates fall from 80-100 per minute to 50-60 per minute, and sleeping heart rates fall from 66-80 per minute to less than 22 per minute.