アメリカ内務省のインスタグラム(usinterior) - 1月28日 00時51分

"Are you having trouble losing those unwanted, extra holiday pounds? Then ask your doctor if hibernation is right for you."

Winter is the time of year in Yellowstone National Park, #Wyoming when bears hibernate, although, it's possible to see one any time of year. During hibernation, a bear doesn't eat, urinate or defecate and can lose up to a third of its body weight in a few months without losing much muscle or bone density. Video of @YellowstoneNPS courtesy Trent Sizemore (@trentsizemore).

[BIHAKUEN]UVシールド(UVShield)

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• YellowstoneNPS