Nature's Touch: 5 Ways to Boost Your Health by Going Outside

Walk in the Woods

The Japanese knew that shinrin-yoku, or "forest bathing," does wonderful things for the body. But now researchers at Tokyo's Nippon Medical School have quantifiable evidence: In one study, women who spent two to four hours in the woods on two consecutive days experienced a nearly 50 percent increase in the activity of cancer-fighting white blood cells.

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