An expert trainer recommends these seven dumbbell exercises to build strength all over when you’re short on time

Woman exercising with dumbbells in a domestic setting.

In January, model and endurance athlete Kori Sampson swept to victory in the debut season of Trainer Games—a six-episode reality competition to crown the next iFIT trainer.

Described as the world’s toughest job interview, the London fitness professional prevailed, reaching a mountaintop summit ahead of his rivals.