Do stairs still leave you out of breath?Amy Eisinger from Greatist.comMar 17, 20161 min read"You can crush a spin class, run a 5K with ease, and power through weight sessions at the gym. But you still get winded climbing a flight of stairs." Does this sound like you? Well, you're not alone. And it doesn't mean you're not in shape. But what does it mean? Click the image below to find out:
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