Living a Healthier Lifestyle

If you're ready to join Oprah and Bob's Best Life Challenge, Bob says there are five things that you must start doing today.

"That's the single most important thing," Bob says. "Most people cut calories, but you've got to lead an active lifestyle."

"That alone is going to translate into significant weight loss," he says. "Build it into your lifestyle of what's your normal schedule."

"Most people are dehydrated, and that hurts the weight loss process," Bob says. "Get your six 8-ounce glasses a day. …But if you're active, you've got to step that up."

Bob says restructuring your eating, especially to incorporate a healthy breakfast, is extremely important.

"You can add it back at a later date," Bob says. "Give it a month or two."