When 53-year-old Kimberly Montgomery began sweating profusely and feeling nauseous after a hot yoga class, she thought nothing of it. Maybe she just needed to cool off from class. Maybe she ate something bad yesterday, or maybe it was just symptoms of menopause, she thought.
A friend convinced her to go to urgent care, where they quickly put her in an ambulance for the hospital. There, a surgeon told her he was going to do cardiac catheterization because she had just had a heart attack.