The Dow climbed 338 points and Jim Cramer is digging into all the action that impacted today's tape. Then, Nucor has fallen amid worries about supply chain issues and slowing demand from China, and Cramer's talking to CEO Leon Topalian to find out more about the headwinds the industry is facing. Next, it's time to get your portfolio in shape, and Cramer's running through the fitness stocks, including today's IPO Lifetime Fitness, and giving you his top picks in the space. Plus, Sharecare CEO Jeff Arnold.