In TODAY.com's Expert Tip of the Day, a trainer reveals the only body part you should consider working out even on rest days.

Neuroscientist Dr. Faye Begeti shares the simple mental trick that “has consistently supported my brain health and energy ...

Polar Bears Really Are Starving Because of Global Warming, Study Shows. New science sheds more light on recent controversy over how much the large carnivores are being impacted by melting sea ice.