Exercise

From Observation Point in Zion National Park, you almost sense geological time. You see how a meandering river spent ten million years cutting through thousands of feet of sandstone and limestone. Carving the contours of massive geological features.

The Yellowstone hike that has it all. Cliffs and mountainsides. Meadows where you expect to see bison. Forests. Wide-open moonscapes with bubbling, steaming geothermal pots. Wildly colorful canyon walls. And the view from the bottom of the Grand Canyon of the Yellowstone River. Right alongside the great rushing river.

Big city. Many Ways to see it. You could walk from church to church. Museum to museum. Or eat your Way from Farmers Market to Farmers Market. They're everywhere. Walk at a moderate pace: 18 miles and 3,000 calories in 9 hours. Some day.

Time to head to the beach. Eat your way through Santa Monica and burn more calories than you consume. Here's an all-day culinary tour that leaves you with a serious calorie deficit. And a big Vitamin D boost.