 Buffett laid out his new plan for his estate in an interview with The Wall Street Journal. Jennifer Kuiper, CBS News. It's common knowledge that after age 30, our metabolism changes. We have less energy and gain weight easier. There's a way to feel better, not in years or months, but sometimes in just days. I'm Chuck Norris. I tried everything. Working with a team of health experts, we came up with Morning Kicks.