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Harvard Health Letter

Safe exercise: Know the warning signs of pushing too hard

Your heart should beat
faster than normal during
exercise, but you should
not feel any chest pain.

Image: Thinkstock

Published: February, 2015

Chest pain, dizziness, and shortness of breath mean you should back off and call your doctor.

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Daily Health Tip

Memorize the warning signs of a stroke

The acronym FAST can help. F: Face drooping. Can the person smile? Is the smile uneven? A: Arm weakness. Is one arm weak or numb? If the person raises both arms, does one drift down? S: Speech difficulty. Is the person's speech slurred? Can they repeat simple sentences you give them? T: Time to call 911. If the person shows any of these symptoms, even if the symptoms go away, call 911. Check the time so you know when the symptoms began.