From gaining weight for roles to rapid weight loss, actors like Renée Zellweger and Chris Hemsworth share their challenges.

Kat-fight! Kaitlan Collins fires barb at Karoline Leavitt at first press briefing.

The big problem is that a lot of people who want it just can’t get it: An induction cooktop or stove requires a 240-volt outlet, which many Americans do not already have in their kitchens.