If you had to just take the desert island test and you could only take a handful of exercises or X, Y, and Z with you, does anything come to mind? Hugh Jackman: Rowing machine. Definitely. Tim Ferriss: Rowing machine. Hugh Jackman: A rower. There’s a reason the rower’s usually empty at the gym—because it’s difficult. And a lot of people want to say it and feel they’ve worked out, and they want to get a sweat, but they don’t necessarily…