Kasia Beaver is shown during an allergic reaction to exercise in this March 6 …
| An allergy to exercise might sound like a couch potato's dream, but for Kasia Beaver, a mom of four who lives in the UK, it's a nightmare. Whenever her heart beats too fast and she sweats, it sparks a potentially fatal allergic reaction. Her eyes swell … See all stories on this topic » |
 ABC News |
