Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Convincing runners to add strength training to their schedules is no easy feat. But hear us out: Lifting weights can make you a better runner in a few different ways. You’ll run more efficiently, ...

Investing helps build wealth by buying assets like stocks or property for returns. Start investing by identifying your style, budget, and risk tolerance to find the best strategy. Utilize low-risk ...