This “bulkier” body habitus is beneficial in cold weather.
Work Step by Step
Having less body surface area to body mass helps conserve heat, which is beneficial in the colder temperatures at these higher latitudes.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.