Celebrity Fitness

If You Get Bored

While Gunnar Peterson believes that workout staples like weights, medicine balls and crunches work wonders for the abs, he spices things up with new equipment like the SpeedFit SpeedBoard. "You can fly on this thing without the grinding sensation you sometimes feel on a regular treadmill," says Peterson, who has introduced clients like Kim Kardashian and Jennifer Lopez to the modern marvel. "You're get the return because it torches body fat."

BONUS TIP:
Peterson also recommends trying out the Ab Coaster, the Ab Solo or an Allen Core Wheel.

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