45-min treadmill interval workout - I always want to scream, "Jane, stop this crazy thing" on the treadmill. Can't imagine getting it up to 10 mph.

45-min treadmill interval workout - I always want to scream, "Jane, stop this crazy thing" on the treadmill. Can't imagine getting it up to 10 mph.

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45-min treadmill interval workout - I always want to scream,

CLICK HERE FOR MORE

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