Rock Doc

I’ve gained 5 pounds since last summer. My body mass index (BMI) is still fine, but I need to stop gaining to keep it that way.

Grizzly bears put my weight gain to shame. In the late summer, they eat some 50,000 calories per day and gain more than 100 pounds. Then, when they hibernate, they fast and live on their body fat. While sleeping the winter away, they don’t pee or poop. They conserve their energy by having heart rates around 15 beats per minute. When they emerge from their dens in the spring, the bears are much slimmer. In short, their “before” and “after” pictures are quite different....