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Let’s face it, exercising sucks. And for these animals, it sucks even more. Next time you go to the gym complaining, remember, they had it worse than you.

The hardest sit-ups … ever.

Bench press, mouse trap, it's all the same for this masochistic mouse.

I couldn’t care less about this treadmill.

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Underwater walking = Worst. Day. Ever.

Stop that! Don’t do that anymore!

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What’s happening? Sir, um, please put me down.

That’s the last time this horse uses an exercise ball.

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No one hates exercise more than this jerk.