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• Polar bear plunges, which involve taking a dip in the ocean in the winter, are said to invigorate and energize, but they can also generate an enormous shock to your system
• You should be in relatively good shape if you take a polar bear plunge; for those at risk of stroke, aneurysm, blood pressure problems, or heart disease, the extra stress on your body can be especially dangerous, increasing your risk of heart attack
• Even among healthy people, Continue reading →