Build lungs. Build grit. Break routine.

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Whether you're prepping for a Hyrox, want to sharpen up your conditioning, or just fancy doing something different, these engine builder workouts will test your lungs, legs, and mindset.

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Use them once a week on top of your current training. Or if you're short on time and just want to feel like you’ve done something, these will do the job.

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Feel free to adjust reps, calories or distances based on where you're currently at.

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P.s. make sure you run through a full warm-up before jumping into any of these. My current go-to is: 500m Row / 500m Ski / 500m Run.